Davis R M 13F-HR Quarterly holdings report by institutional manager

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	Oct 31, 2018
Estimated average burden
hours per response:		23.8

COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
3M Co	COM	88579Y101	29,188	140,478	SH		SOLE		137,948	0	2,530
Abbott Labs	COM	002824100	2,411	30,162	SH		SOLE		28,966	0	1,196
Abbvie Inc	COM	00287Y109	1,936	24,022	SH		SOLE		23,018	0	1,004
Accenture Plc	COM	G1151C101	23,425	133,081	SH		SOLE		130,744	0	2,337
Activision Blizzard Inc	COM	00507V109	2,622	57,585	SH		SOLE		56,515	0	1,070
Adobe Systems Inc	COM	00724F101	417	1,566	SH		SOLE		1,566	0	0
Aflac Inc	COM	001055102	243	4,860	SH		SOLE		4,860	0	0
Air Products & Chemicals Inc	COM	009158106	764	3,999	SH		SOLE		3,968	0	31
Alphabet Inc-A	COM	02079K305	53,667	45,601	SH		SOLE		44,641	0	960
Alphabet Inc-C	COM	02079K107	12,904	10,998	SH		SOLE		10,685	0	313
Altria Group Inc	COM	02209S103	670	11,660	SH		SOLE		11,180	0	480
Amazon.com Inc	COM	023135106	24,430	13,719	SH		SOLE		13,517	0	202
American Express Co	COM	025816109	239	2,184	SH		SOLE		2,184	0	0
American Tower Corp	COM	03027X100	74,699	379,067	SH		SOLE		370,775	0	8,292
American Water Works Co Inc	COM	030420103	47,191	452,629	SH		SOLE		443,109	0	9,520
Ametek Inc	COM	031100100	39,045	470,586	SH		SOLE		462,701	0	7,885
Amgen Inc	COM	031162100	1,158	6,093	SH		SOLE		5,550	0	543
Amphenol Corp	COM	032095101	44,165	467,648	SH		SOLE		459,089	0	8,559
Ansys Inc	COM	03662Q105	18,605	101,828	SH		SOLE		100,878	0	950
Aon PLC	COM	G0408V102	26,812	157,071	SH		SOLE		155,146	0	1,925
Apple Inc	COM	037833100	77,133	406,070	SH		SOLE		397,579	0	8,491
Aqua America Inc	COM	03836W103	214	5,875	SH		SOLE		5,875	0	0
Assurant Inc	COM	04621X108	466	4,905	SH		SOLE		4,905	0	0
AT&T Inc	COM	00206R102	1,215	38,730	SH		SOLE		36,990	0	1,740
Automatic Data Processing Inc	COM	053015103	10,013	62,682	SH		SOLE		61,354	0	1,328
Bank of America Corp	COM	060505104	709	25,683	SH		SOLE		25,282	0	401
Bank of Nova Scotia	COM	064149107	245	4,600	SH		SOLE		4,600	0	0
BB&T Corp	COM	054937107	536	11,517	SH		SOLE		11,487	0	30
Berkshire Hathaway Inc-A	COM	084670108	602	2	SH		SOLE		2	0	0
Berkshire Hathaway Inc-B	COM	084670702	48,288	240,368	SH		SOLE		235,836	0	4,532
Blackrock Inc	COM	09247X101	288	674	SH		SOLE		659	0	15
Blackstone Group LP	COM	09253U108	325	9,300	SH		SOLE		9,300	0	0
Boeing Co	COM	097023105	8,485	22,246	SH		SOLE		22,059	0	187
Booking Holdings Inc	COM	09857L108	22,780	13,055	SH		SOLE		12,840	0	215
Borgwarner Inc	COM	099724106	14,372	374,164	SH		SOLE		366,183	0	7,981
BP Plc ADR	COM	055622104	209	4,779	SH		SOLE		4,779	0	0
Bristol-Myers Squibb Co	COM	110122108	672	14,093	SH		SOLE		13,743	0	350
Broadcom Ltd	COM	11135F101	542	1,803	SH		SOLE		1,803	0	0
Brown Forman Corp-B	COM	115637209	1,307	24,763	SH		SOLE		24,763	0	0
Camden Natl Corp	COM	133034108	204	4,900	SH		SOLE		4,600	0	300
Canadian Natl Railway	COM	136375102	275	3,070	SH		SOLE		3,070	0	0
Carnival Corp	COM	143658300	13,753	271,164	SH		SOLE		267,229	0	3,935
Caterpillar Inc	COM	149123101	449	3,317	SH		SOLE		3,305	0	12
Cerner Corp	COM	156782104	35,083	613,227	SH		SOLE		603,889	0	9,338
Charles Schwab Corp	COM	808513105	281	6,564	SH		SOLE		6,564	0	0
Chevron Corp	COM	166764100	3,661	29,717	SH		SOLE		27,721	0	1,996
Chubb Ltd	COM	H1467J104	36,121	257,861	SH		SOLE		253,936	0	3,925
Church & Dwight Inc	COM	171340102	634	8,905	SH		SOLE		8,905	0	0
Cisco Systems Inc	COM	17275R102	1,047	19,399	SH		SOLE		19,399	0	0
Clorox Co	COM	189054109	1,076	6,703	SH		SOLE		6,269	0	434
CME Group Inc	COM	12572Q105	18,777	114,090	SH		SOLE		111,950	0	2,140
Coca Cola Co	COM	191216100	1,147	24,483	SH		SOLE		23,448	0	1,035
Cognizant Tech Solutions Corp	COM	192446102	27,045	373,286	SH		SOLE		366,617	0	6,669
Colgate Palmolive Co	COM	194162103	8,635	125,988	SH		SOLE		122,876	0	3,112
Comcast Corp	COM	20030N101	6,125	153,206	SH		SOLE		151,252	0	1,954
Conocophillips	COM	20825C104	21,133	316,648	SH		SOLE		312,123	0	4,525
Constellation Brands Inc-A	COM	21036P108	15,645	89,234	SH		SOLE		86,981	0	2,253
Cooper Companies Inc	COM	216648402	9,050	30,557	SH		SOLE		29,957	0	600
Costco Wholesale Corp	COM	22160K105	28,815	119,002	SH		SOLE		117,710	0	1,292
Covetrus Inc	COM	22304C100	3,616	113,520	SH		SOLE		110,963	0	2,557
CSX Corp	COM	126408103	289	3,858	SH		SOLE		3,780	0	78
Cullen/Frost Bankers Inc	COM	229899109	28,523	293,844	SH		SOLE		289,672	0	4,172
Cyberark Software Ltd	COM	M2682V108	5,647	47,436	SH		SOLE		46,986	0	450
Danaher Corp	COM	235851102	55,242	418,434	SH		SOLE		410,742	0	7,692
Deere & Co	COM	244199105	1,351	8,452	SH		SOLE		8,247	0	205
Diageo Plc ADR	COM	25243Q205	457	2,792	SH		SOLE		2,792	0	0
Dominion Energy Inc	COM	25746U109	205	2,680	SH		SOLE		2,680	0	0
DowDupont Inc	COM	26078J100	855	16,032	SH		SOLE		16,004	0	28
Duke Energy Corp	COM	26441C204	229	2,544	SH		SOLE		2,544	0	0
Dunkin Brands Group Inc	COM	265504100	39,955	532,026	SH		SOLE		525,496	0	6,530
Ecolab Inc	COM	278865100	41,325	234,085	SH		SOLE		229,497	0	4,588
Eli Lilly & Co	COM	532457108	849	6,544	SH		SOLE		5,209	0	1,335
Emerson Electric Co	COM	291011104	2,186	31,929	SH		SOLE		30,734	0	1,195
Energy Transfer LP	COM	29273V100	190	12,384	SH		SOLE		12,384	0	0
Enterprise Products Partners L	COM	293792107	741	25,455	SH		SOLE		24,680	0	775
EOG Resources Inc	COM	26875P101	299	3,142	SH		SOLE		3,142	0	0
Exxon Mobil Corp	COM	30231G102	36,651	453,602	SH		SOLE		429,059	0	24,543
F5 Networks Inc	COM	315616102	512	3,260	SH		SOLE		3,260	0	0
Facebook Inc-A	COM	30303M102	27,761	166,541	SH		SOLE		162,791	0	3,750
Financial Select Sector SPDR	COM	81369Y605	229	8,910	SH		SOLE		8,795	0	115
Fiserv Inc	COM	337738108	323	3,655	SH		SOLE		3,655	0	0
Fortive Corp	COM	34959J108	420	5,012	SH		SOLE		5,010	0	2
General Electric Co	COM	369604103	456	45,681	SH		SOLE		34,079	0	11,602
Harris Corp	COM	413875105	260	1,625	SH		SOLE		1,600	0	25
Healthcare Svcs Grp Inc	COM	421906108	636	19,275	SH		SOLE		19,125	0	150
Henry Schein Inc	COM	806407102	24,835	413,152	SH		SOLE		403,594	0	9,558
Hershey Co	COM	427866108	25,033	217,998	SH		SOLE		216,240	0	1,758
Hologic Inc	COM	436440101	16,768	346,450	SH		SOLE		337,035	0	9,415
Home Depot Inc	COM	437076102	18,090	94,273	SH		SOLE		92,205	0	2,068
Honeywell International Inc	COM	438516106	2,527	15,902	SH		SOLE		15,384	0	518
Idexx Labs Corp	COM	45168D104	32,416	144,971	SH		SOLE		142,636	0	2,335
Illinois Tool Wks Inc	COM	452308109	902	6,283	SH		SOLE		6,283	0	0
Intel Corp	COM	458140100	1,041	19,391	SH		SOLE		19,281	0	110
Intl Business Machines Corp	COM	459200101	1,446	10,248	SH		SOLE		10,062	0	185
Intuit Inc	COM	461202103	55,022	210,483	SH		SOLE		208,292	0	2,191
Intuitive Surgical Inc	COM	46120E602	296	519	SH		SOLE		519	0	0
Invesco QQQ Trust Series 1 ETF	COM	46090E103	279	1,551	SH		SOLE		1,335	0	216
Invesco S&P 500 Equal Weight E	COM	46137V357	1,363	13,055	SH		SOLE		2,200	0	10,855
IQ Hedge Multi Strategy Tracke	COM	45409B107	202	6,710	SH		SOLE		6,710	0	0
iShares Core MSCI EAFE ETF	COM	46432F842	413	6,798	SH		SOLE		6,594	0	204
iShares Core MSCI EM ETF	COM	46434G103	231	4,461	SH		SOLE		4,330	0	131
iShares Core S&P 500 ETF	COM	464287200	910	3,197	SH		SOLE		2,911	0	286
iShares Core S&P M/C ETF	COM	464287507	15,406	81,343	SH		SOLE		20,211	0	61,132
iShares Core S&P S/C ETF	COM	464287804	1,298	16,826	SH		SOLE		14,202	0	2,624
iShares MSCI EM ETF	COM	464287234	267	6,212	SH		SOLE		4,846	0	1,366
iShares Russell 1000 ETF	COM	464287622	4,261	27,089	SH		SOLE		22,589	0	4,500
iShares Russell 1000 Gwth ETF	COM	464287614	1,001	6,613	SH		SOLE		6,273	0	340
iShares Russell 2000 ETF	COM	464287655	1,210	7,901	SH		SOLE		3,460	0	4,441
iShares Russell 3000 ETF	COM	464287689	81,856	491,040	SH		SOLE		490,962	0	78
iShares Russell M/C ETF	COM	464287499	1,273	23,592	SH		SOLE		13,802	0	9,790
iShares Russell M/C Gwth ETF	COM	464287481	343	2,527	SH		SOLE		2,527	0	0
iShares S&P 500 Gwth ETF	COM	464287309	517	3,001	SH		SOLE		2,563	0	438
iShares S&P 500 Value	COM	464287408	319	2,828	SH		SOLE		2,735	0	93
iShares S&P GSCI Commodity ETF	COM	46428R107	208	13,040	SH		SOLE		13,040	0	0
iShares S&P M/C 400 Gwth ETF	COM	464287606	792	3,616	SH		SOLE		3,536	0	80
iShares S&P M/C 400 Value ETF	COM	464287705	220	1,404	SH		SOLE		1,377	0	27
Jack Henry & Associates Inc	COM	426281101	264	1,902	SH		SOLE		1,902	0	0
Johnson & Johnson	COM	478160104	46,383	331,807	SH		SOLE		322,244	0	9,562
JP Morgan Chase & Co	COM	46625H100	21,008	207,528	SH		SOLE		204,605	0	2,923
Kimberly Clark Corp	COM	494368103	1,528	12,331	SH		SOLE		12,331	0	0
Linde Plc	COM	G5494J103	32,381	184,055	SH		SOLE		180,978	0	3,077
Lockheed Martin Corp	COM	539830109	215	715	SH		SOLE		715	0	0
Lowe's Companies Inc	COM	548661107	1,484	13,557	SH		SOLE		12,882	0	675
Magellan Midstream Partners LP	COM	559080106	424	6,990	SH		SOLE		6,590	0	400
Mastercard Inc-A	COM	57636Q104	679	2,883	SH		SOLE		2,768	0	115
McCormick & Co Inc	COM	579780206	11,743	77,962	SH		SOLE		76,937	0	1,025
McDonalds Corp	COM	580135101	3,120	16,431	SH		SOLE		15,505	0	926
Medtronic Plc	COM	G5960L103	31,341	344,100	SH		SOLE		339,118	0	4,982
Merck & Co Inc	COM	58933Y105	23,142	278,254	SH		SOLE		265,740	0	12,514
Mettler-Toledo Intl Inc	COM	592688105	47,383	65,537	SH		SOLE		64,090	0	1,447
Microchip Technology Inc	COM	595017104	46,094	555,621	SH		SOLE		545,697	0	9,924
Microsoft Corp	COM	594918104	32,624	276,615	SH		SOLE		272,235	0	4,380
Mondelez Intl Inc-A	COM	609207105	341	6,840	SH		SOLE		6,681	0	159
Nextera Energy Inc	COM	65339F101	24,791	128,237	SH		SOLE		126,291	0	1,946
Nike Inc	COM	654106103	12,240	145,349	SH		SOLE		142,155	0	3,194
Nordson Corp	COM	655663102	11,376	85,842	SH		SOLE		83,732	0	2,110
Norfolk Southern Corp	COM	655844108	1,341	7,177	SH		SOLE		6,737	0	440
Northern Trust Corp	COM	665859104	20,983	232,089	SH		SOLE		228,047	0	4,042
Northrop Grumman Corp	COM	666807102	13,716	50,875	SH		SOLE		50,420	0	455
Novartis Ag ADR	COM	66987V109	221	2,295	SH		SOLE		2,295	0	0
Novo-Nordisk A/S ADR	COM	670100205	245	4,675	SH		SOLE		4,675	0	0
Omnicom Group Inc	COM	681919106	1,529	20,948	SH		SOLE		19,923	0	1,025
Oracle Corp	COM	68389X105	842	15,679	SH		SOLE		15,674	0	5
Oshkosh Corp	COM	688239201	31,179	415,006	SH		SOLE		406,716	0	8,290
Paychex Inc	COM	704326107	283	3,524	SH		SOLE		1,524	0	2,000
Paypal Holdings Inc	COM	70450Y103	209	2,016	SH		SOLE		1,985	0	31
Pepsico Inc	COM	713448108	42,574	347,400	SH		SOLE		341,851	0	5,548
Pfizer Inc	COM	717081103	2,348	55,286	SH		SOLE		53,835	0	1,451
Philip Morris Intl Inc	COM	718172109	685	7,745	SH		SOLE		7,280	0	465
Phillips 66	COM	718546104	38,604	405,631	SH		SOLE		401,109	0	4,522
PNC Financial Services Group	COM	693475105	367	2,994	SH		SOLE		2,994	0	0
Procter & Gamble Co	COM	742718109	10,386	99,820	SH		SOLE		90,837	0	8,983
Prudential Financial Inc	COM	744320102	293	3,192	SH		SOLE		3,136	0	56
Qualcomm Inc	COM	747525103	18,153	318,298	SH		SOLE		311,742	0	6,556
RBC Bearings Inc	COM	75524B104	12,047	94,731	SH		SOLE		93,116	0	1,615
Red Hat Inc	COM	756577102	36,511	199,841	SH		SOLE		195,904	0	3,937
Rockwell Automation Corp	COM	773903109	13,713	78,153	SH		SOLE		77,288	0	865
Roper Technologies Inc	COM	776696106	47,898	140,065	SH		SOLE		137,410	0	2,655
Royal Dutch Shell ADR-A	COM	780259206	787	12,570	SH		SOLE		12,390	0	180
SBA Communications Corp-REIT	COM	78410G104	222	1,111	SH		SOLE		1,111	0	0
Schlumberger Ltd	COM	806857108	280	6,424	SH		SOLE		6,225	0	199
Seagate Technology	COM	G7945M107	242	5,062	SH		SOLE		5,062	0	0
Sherwin-Williams Co	COM	824348106	19,960	46,343	SH		SOLE		45,695	0	648
Sirius XM Holdings Inc	COM	82968B103	65	11,500	SH		SOLE		11,500	0	0
Smucker JM Co	COM	832696405	538	4,618	SH		SOLE		4,618	0	0
SPDR S&P 500 ETF	COM	78462F103	12,719	45,026	SH		SOLE		13,456	0	31,570
SPDR S&P M/C 400 ETF	COM	78467Y107	1,981	5,734	SH		SOLE		1,624	0	4,110
Starbucks Corp	COM	855244109	8,888	119,557	SH		SOLE		117,782	0	1,775
State Street Corp	COM	857477103	1,218	18,510	SH		SOLE		310	0	18,200
Stryker Corp	COM	863667101	25,940	131,331	SH		SOLE		128,816	0	2,515
Sysco Corp	COM	871829107	317	4,744	SH		SOLE		4,744	0	0
T Rowe Price Group Inc	COM	74144T108	16,879	168,593	SH		SOLE		165,861	0	2,732
Teleflex Inc	COM	879369106	24,672	81,653	SH		SOLE		80,476	0	1,177
Thermo Fisher Scientific Inc	COM	883556102	43,853	160,212	SH		SOLE		158,361	0	1,851
TJX Companies Inc	COM	872540109	46,153	867,381	SH		SOLE		852,110	0	15,271
Toll Brothers Inc	COM	889478103	7,187	198,529	SH		SOLE		198,359	0	170
Torchmark Corp	COM	891027104	9,643	117,674	SH		SOLE		115,197	0	2,477
Toronto-Dominion Bank	COM	891160509	681	12,540	SH		SOLE		12,506	0	34
Total SA ADR	COM	89151E109	383	6,878	SH		SOLE		6,728	0	150
Tractor Supply Co	COM	892356106	5,802	59,349	SH		SOLE		57,724	0	1,625
Travelers Companies Inc	COM	89417E109	432	3,153	SH		SOLE		3,141	0	12
Unilever NV-NY Shares	COM	904784709	677	11,609	SH		SOLE		11,609	0	0
Unilever Plc ADR	COM	904767704	36,532	632,924	SH		SOLE		622,066	0	10,858
Union Pacific Corp	COM	907818108	19,743	118,083	SH		SOLE		115,754	0	2,329
United Technologies Corp	COM	913017109	35,143	272,660	SH		SOLE		265,743	0	6,917
Unitedhealth Group Inc	COM	91324P102	15,544	62,863	SH		SOLE		62,123	0	740
US Bancorp	COM	902973304	39,199	813,433	SH		SOLE		797,109	0	16,324
Vanguard Dvd Appreciation ETF	COM	921908844	290	2,648	SH		SOLE		2,220	0	428
Vanguard Gwth ETF	COM	922908736	208	1,327	SH		SOLE		1,065	0	262
Vanguard REIT ETF	COM	922908553	369	4,249	SH		SOLE		3,717	0	532
Vanguard S&P 500 ETF	COM	922908363	604	2,327	SH		SOLE		2,143	0	184
Vanguard S/C ETF	COM	922908751	1,874	12,267	SH		SOLE		2,071	0	10,196
Vanguard Total Stock Mkt ETF	COM	922908769	4,204	29,053	SH		SOLE		12,537	0	16,516
Varian Medical Systems Inc	COM	92220P105	227	1,600	SH		SOLE		1,600	0	0
Verizon Communications Inc	COM	92343V104	1,829	30,931	SH		SOLE		29,769	0	1,162
VF Corp	COM	918204108	3,282	37,766	SH		SOLE		37,656	0	110
Visa Inc-A	COM	92826C839	44,006	281,744	SH		SOLE		278,728	0	3,016
Vulcan Materials Co	COM	929160109	317	2,675	SH		SOLE		2,675	0	0
Wal-Mart Stores Inc	COM	931142103	229	2,345	SH		SOLE		2,345	0	0
Walgreens Boots Alliance Inc	COM	931427108	323	5,100	SH		SOLE		5,100	0	0
Walt Disney Co	COM	254687106	44,658	402,218	SH		SOLE		395,826	0	6,392
Waste Connections Inc	COM	94106B101	57,425	648,212	SH		SOLE		636,224	0	11,988
Waste Management Inc	COM	94106L109	294	2,829	SH		SOLE		2,829	0	0
Wells Fargo & Co	COM	949746101	236	4,878	SH		SOLE		4,058	0	820
WEX Inc	COM	96208T104	291	1,515	SH		SOLE		1,500	0	15
Weyerhaeuser Co	COM	962166104	529	20,073	SH		SOLE		19,753	0	320
Xylem Inc	COM	98419M100	305	3,864	SH		SOLE		3,864	0	0
Yum Brands Inc	COM	988498101	1,938	19,420	SH		SOLE		19,320	0	100
Yum China Holdings Inc	COM	98850P109	888	19,780	SH		SOLE		19,780	0	0
iShares MSCI EAFE ETF	INTL	464287465	2,088	32,193	SH		SOLE		31,419	0	774
Vanguard FTSE All World Ex-US	INTL	922042775	32,016	638,399	SH		SOLE		602,516	0	35,883
Vanguard FTSE Dev Mkts ETF	INTL	921943858	56,643	1,385,926	SH		SOLE		1,356,076	0	29,850
Vanguard FTSE EM ETF	INTL	922042858	21,685	510,228	SH		SOLE		477,648	0	32,580
Wells Fargo New	PERP PFD CNV A	949746804	258	200	SH		SOLE		200	0	0
Invesco Bulletshares 2019 Corp	BOND FUND	46138J304	3,188	151,302	SH		SOLE		116,941	0	34,361
Invesco Bulletshares 2020 Corp	BOND FUND	46138J502	4,879	229,941	SH		SOLE		137,903	0	92,038
Invesco Bulletshares 2021 Corp	BOND FUND	46138J700	5,091	242,070	SH		SOLE		132,260	0	109,810
Invesco Bulletshares 2022 Corp	BOND FUND	46138J882	4,923	233,118	SH		SOLE		135,509	0	97,609
Invesco Bulletshares 2023 Corp	BOND FUND	46138J866	4,138	198,966	SH		SOLE		115,186	0	83,780
Invesco Bulletshares 2024 Corp	BOND FUND	46138J841	1,554	74,961	SH		SOLE		26,511	0	48,450
iShares I/T Corporate Bond ETF	BOND FUND	464288638	1,932	35,041	SH		SOLE		28,510	0	6,531
iShares S/T Corporate Bond ETF	BOND FUND	464288646	2,843	53,832	SH		SOLE		47,670	0	6,162
Pimco S/T Muni Bond ETF	BOND FUND	72201R874	269	5,350	SH		SOLE		4,850	0	500
Vanguard Total Bond Mkt ETF	BOND FUND	921937835	617	7,596	SH		SOLE		1,707	0	5,889