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
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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	28,073	147,336	SH		SOLE		144,756	0	2,580
Abbott Labs	COM	002824100	2,375	32,834	SH		SOLE		31,508	0	1,326
Abbvie Inc	COM	00287Y109	2,473	26,822	SH		SOLE		25,818	0	1,004
Accenture Plc	COM	G1151C101	19,529	138,497	SH		SOLE		136,160	0	2,337
Adobe Sys Inc	COM	00724F101	382	1,689	SH		SOLE		1,689	0	0
Aflac Inc	COM	001055102	223	4,902	SH		SOLE		4,860	0	42
Air Products & Chemicals Inc	COM	009158106	664	4,151	SH		SOLE		4,143	0	8
Alphabet Inc-A	COM	02079K305	47,737	45,683	SH		SOLE		44,691	0	992
Alphabet Inc-C	COM	02079K107	12,216	11,796	SH		SOLE		11,468	0	328
Altria Group Inc	COM	02209S103	573	11,610	SH		SOLE		11,230	0	380
Amazon.com Inc	COM	023135106	15,350	10,220	SH		SOLE		10,101	0	119
American Express Co	COM	025816109	219	2,294	SH		SOLE		2,294	0	0
American Tower Corp	COM	03027X100	60,735	383,937	SH		SOLE		375,520	0	8,417
American Water Works Co Inc	COM	030420103	40,710	448,501	SH		SOLE		438,511	0	9,990
Ametek Inc	COM	031100100	34,030	502,655	SH		SOLE		494,835	0	7,820
Amgen Inc	COM	031162100	1,294	6,647	SH		SOLE		6,133	0	514
Amphenol Corp	COM	032095101	38,797	478,863	SH		SOLE		470,379	0	8,484
Ansys Inc	COM	03662Q105	14,886	104,143	SH		SOLE		103,108	0	1,035
Aon PLC	COM	G0408V102	24,013	165,194	SH		SOLE		163,179	0	2,015
Apple Inc	COM	037833100	65,899	417,768	SH		SOLE		409,443	0	8,325
Aqua America Inc	COM	03836W103	239	6,981	SH		SOLE		6,981	0	0
Assurant Inc	COM	04621X108	439	4,905	SH		SOLE		4,905	0	0
AT&T Inc	COM	00206R102	1,198	41,959	SH		SOLE		39,738	0	2,220
Automatic Data Processing Inc	COM	053015103	9,125	69,591	SH		SOLE		68,249	0	1,342
Bank of America Corp	COM	060505104	745	30,246	SH		SOLE		29,845	0	401
Bank of Nova Scotia	COM	064149107	340	6,825	SH		SOLE		6,825	0	0
BB&T Corp	COM	054937107	504	11,627	SH		SOLE		11,597	0	30
Becton Dickinson & Co	COM	075887109	308	1,366	SH		SOLE		1,353	0	13
Berkshire Hathaway Inc-A	COM	084670108	612	2	SH		SOLE		2	0	0
Berkshire Hathaway Inc-B	COM	084670702	46,342	226,967	SH		SOLE		222,590	0	4,377
Blackrock Inc	COM	09247X101	271	691	SH		SOLE		688	0	3
Blackstone Group LP	COM	09253U108	307	10,300	SH		SOLE		10,300	0	0
Boeing Co	COM	097023105	4,428	13,730	SH		SOLE		13,663	0	67
Booking Holdings Inc	COM	09857L108	22,323	12,960	SH		SOLE		12,740	0	220
Borgwarner Inc	COM	099724106	17,405	501,000	SH		SOLE		492,999	0	8,001
BP Plc ADR	COM	055622104	204	5,387	SH		SOLE		5,387	0	0
Bristol-Myers Squibb Co	COM	110122108	747	14,368	SH		SOLE		14,003	0	365
Broadcom Ltd	COM	11135F101	497	1,953	SH		SOLE		1,953	0	0
Brown Forman Corp-B	COM	115637209	1,178	24,763	SH		SOLE		24,763	0	0
Canadian Natl Railway	COM	136375102	403	5,440	SH		SOLE		5,440	0	0
Carnival Corp	COM	143658300	13,293	269,627	SH		SOLE		265,622	0	4,005
Caterpillar Inc	COM	149123101	454	3,574	SH		SOLE		3,562	0	12
Cerner Corp	COM	156782104	33,530	639,403	SH		SOLE		629,214	0	10,189
Charles Schwab Corp	COM	808513105	274	6,600	SH		SOLE		6,564	0	36
Chevron Corp	COM	166764100	3,472	31,918	SH		SOLE		29,708	0	2,210
Chubb Ltd	COM	H1467J104	32,347	250,403	SH		SOLE		246,355	0	4,048
Church & Dwight Inc	COM	171340102	707	10,753	SH		SOLE		10,753	0	0
Cisco Systems Inc	COM	17275R102	864	19,947	SH		SOLE		19,859	0	88
Clorox Co	COM	189054109	998	6,472	SH		SOLE		6,027	0	445
CME Group Inc	COM	12572Q105	22,593	120,098	SH		SOLE		117,933	0	2,165
Coca Cola Co	COM	191216100	1,183	24,991	SH		SOLE		23,931	0	1,060
Cognizant Tech Solutions Corp	COM	192446102	21,780	343,102	SH		SOLE		336,784	0	6,318
Colgate Palmolive Co	COM	194162103	7,668	128,834	SH		SOLE		125,302	0	3,532
Comcast Corp	COM	20030N101	6,934	203,629	SH		SOLE		201,754	0	1,875
Conocophillips	COM	20825C104	20,225	324,381	SH		SOLE		320,111	0	4,270
Constellation Brands Inc-A	COM	21036P108	12,122	75,374	SH		SOLE		73,492	0	1,882
Cooper Companies Inc	COM	216648402	13,240	52,023	SH		SOLE		51,398	0	625
Costco Wholesale Corp	COM	22160K105	24,102	118,314	SH		SOLE		117,065	0	1,249
CSX Corp	COM	126408103	245	3,938	SH		SOLE		3,780	0	158
Cullen/Frost Bankers Inc	COM	229899109	23,705	269,559	SH		SOLE		265,500	0	4,059
CVS Health Corp	COM	126650100	236	3,601	SH		SOLE		3,501	0	100
Cyberark Software Ltd	COM	M2682V108	17,591	237,266	SH		SOLE		230,441	0	6,825
Danaher Corp	COM	235851102	43,718	423,948	SH		SOLE		415,691	0	8,257
Deere & Co	COM	244199105	1,345	9,014	SH		SOLE		8,809	0	205
Diageo Plc ADR	COM	25243Q205	401	2,830	SH		SOLE		2,830	0	0
Dominion Energy Inc	COM	25746U109	206	2,884	SH		SOLE		2,884	0	0
DowDupont Inc	COM	26078J100	924	17,281	SH		SOLE		17,253	0	28
Duke Energy Corp	COM	26441C204	217	2,515	SH		SOLE		2,515	0	0
Dunkin Brands Group Inc	COM	265504100	38,260	596,699	SH		SOLE		588,869	0	7,830
Ecolab Inc	COM	278865100	36,088	244,913	SH		SOLE		240,133	0	4,780
Eli Lilly & Co	COM	532457108	1,105	9,548	SH		SOLE		8,213	0	1,335
Emerson Electric Co	COM	291011104	2,013	33,689	SH		SOLE		32,455	0	1,234
Energy Transfer LP	COM	29273V100	166	12,576	SH		SOLE		12,384	0	192
Enterprise Products Partners L	COM	293792107	745	30,285	SH		SOLE		25,330	0	4,955
EOG Resources Inc	COM	26875P101	377	4,321	SH		SOLE		4,321	0	0
Exxon Mobil Corp	COM	30231G102	32,649	478,795	SH		SOLE		453,568	0	25,227
F5 Networks Inc	COM	315616102	1,485	9,165	SH		SOLE		8,990	0	175
Facebook Inc-A	COM	30303M102	22,397	170,850	SH		SOLE		167,054	0	3,796
Financial Select Sector SPDR	COM	81369Y605	289	12,113	SH		SOLE		11,998	0	115
Fiserv Inc	COM	337738108	401	5,459	SH		SOLE		5,459	0	0
Fortive Corp	COM	34959J108	512	7,561	SH		SOLE		7,559	0	2
General Dynamics Corp	COM	369550108	202	1,282	SH		SOLE		1,271	0	11
General Electric Co	COM	369604103	427	56,357	SH		SOLE		43,804	0	12,553
Harris Corp	COM	413875105	220	1,637	SH		SOLE		1,600	0	37
Healthcare Svcs Grp Inc	COM	421906108	1,016	25,275	SH		SOLE		25,125	0	150
Henry Schein Inc	COM	806407102	34,002	433,031	SH		SOLE		422,823	0	10,208
Hershey Co	COM	427866108	24,635	229,846	SH		SOLE		227,621	0	2,225
Hologic Inc	COM	436440101	24,842	604,431	SH		SOLE		591,101	0	13,330
Home Depot Inc	COM	437076102	14,611	85,034	SH		SOLE		83,036	0	1,998
Honeywell International Inc	COM	438516106	2,254	17,058	SH		SOLE		16,540	0	518
Idexx Labs Corp	COM	45168D104	28,449	152,934	SH		SOLE		150,079	0	2,855
Illinois Tool Wks Inc	COM	452308109	855	6,746	SH		SOLE		6,408	0	338
Intel Corp	COM	458140100	959	20,435	SH		SOLE		20,225	0	210
Intl Business Machines Corp	COM	459200101	1,253	11,022	SH		SOLE		10,799	0	222
Intuit Inc	COM	461202103	45,672	232,014	SH		SOLE		229,603	0	2,411
Intuitive Surgical Inc	COM	46120E602	225	469	SH		SOLE		469	0	0
Invesco QQQ Trust Series 1 ETF	COM	46090E103	316	2,051	SH		SOLE		1,835	0	216
Invesco S&P 500 Equal Weight E	COM	46137V357	1,212	13,260	SH		SOLE		2,405	0	10,855
iShares Core MSCI EAFE ETF	COM	46432F842	505	9,187	SH		SOLE		9,029	0	158
iShares Core MSCI EM ETF	COM	46434G103	259	5,501	SH		SOLE		5,284	0	217
iShares Core S&P 500 ETF	COM	464287200	977	3,882	SH		SOLE		3,600	0	282
iShares Core S&P M/C ETF	COM	464287507	12,172	73,299	SH		SOLE		14,362	0	58,937
iShares Core S&P S/C ETF	COM	464287804	1,233	17,787	SH		SOLE		15,165	0	2,622
iShares MSCI EM ETF	COM	464287234	242	6,186	SH		SOLE		5,211	0	975
iShares Russell 1000 ETF	COM	464287622	2,900	20,910	SH		SOLE		18,396	0	2,514
iShares Russell 1000 Gwth ETF	COM	464287614	836	6,387	SH		SOLE		5,394	0	993
iShares Russell 2000 ETF	COM	464287655	1,043	7,791	SH		SOLE		3,036	0	4,755
iShares Russell 3000 ETF	COM	464287689	69,950	476,110	SH		SOLE		476,032	0	78
iShares Russell M/C ETF	COM	464287499	1,124	24,189	SH		SOLE		13,040	0	11,149
iShares Russell M/C Gwth ETF	COM	464287481	333	2,930	SH		SOLE		2,730	0	200
iShares S&P M/C 400 Gwth ETF	COM	464287606	490	2,560	SH		SOLE		2,500	0	60
Jack Henry & Associates Inc	COM	426281101	282	2,227	SH		SOLE		2,227	0	0
Johnson & Johnson	COM	478160104	44,305	343,317	SH		SOLE		333,532	0	9,785
JP Morgan Chase & Co	COM	46625H100	19,535	200,115	SH		SOLE		197,555	0	2,560
Kimberly Clark Corp	COM	494368103	1,560	13,695	SH		SOLE		13,695	0	0
Linde Plc	COM	G5494J103	25,964	166,393	SH		SOLE		163,714	0	2,679
Lockheed Martin Corp	COM	539830109	213	812	SH		SOLE		812	0	0
Lowe's Companies Inc	COM	548661107	1,382	14,968	SH		SOLE		14,168	0	800
Magellan Midstream Partners LP	COM	559080106	405	7,090	SH		SOLE		6,590	0	500
Mastercard Inc-A	COM	57636Q104	726	3,848	SH		SOLE		3,733	0	115
Mccormick & Co Inc	COM	579780206	13,678	98,232	SH		SOLE		97,257	0	975
McDonalds Corp	COM	580135101	3,206	18,055	SH		SOLE		16,861	0	1,194
Medtronic Plc	COM	G5960L103	32,176	353,737	SH		SOLE		348,943	0	4,794
Merck & Co Inc	COM	58933Y105	21,383	279,851	SH		SOLE		267,612	0	12,239
Mettler-Toledo Intl Inc	COM	592688105	39,434	69,724	SH		SOLE		68,250	0	1,474
Microchip Technology Inc	COM	595017104	37,373	519,640	SH		SOLE		509,818	0	9,822
Microsoft Corp	COM	594918104	25,386	249,938	SH		SOLE		246,704	0	3,234
Mondelez Intl Inc-A	COM	609207105	275	6,866	SH		SOLE		6,776	0	90
Nextera Energy Inc	COM	65339F101	11,334	65,206	SH		SOLE		64,371	0	835
Nike Inc	COM	654106103	11,552	155,817	SH		SOLE		151,834	0	3,983
Nordson Corp	COM	655663102	11,372	95,284	SH		SOLE		93,199	0	2,085
Norfolk Southern Corp	COM	655844108	1,088	7,276	SH		SOLE		6,825	0	451
Northern Trust Corp	COM	665859104	20,331	243,228	SH		SOLE		239,626	0	3,602
Northrop Grumman Corp	COM	666807102	12,921	52,758	SH		SOLE		52,273	0	485
Novartis Ag ADR	COM	66987V109	219	2,550	SH		SOLE		2,538	0	12
Novo-Nordisk A/S ADR	COM	670100205	215	4,675	SH		SOLE		4,675	0	0
Omnicom Group Inc	COM	681919106	1,758	23,998	SH		SOLE		22,973	0	1,025
Oracle Corp	COM	68389X105	794	17,578	SH		SOLE		17,573	0	5
Oshkosh Corp	COM	688239201	28,086	458,099	SH		SOLE		449,604	0	8,495
Paychex Inc	COM	704326107	218	3,348	SH		SOLE		1,325	0	2,023
Pepsico Inc	COM	713448108	39,645	358,842	SH		SOLE		353,378	0	5,463
Pfizer Inc	COM	717081103	2,103	48,179	SH		SOLE		46,996	0	1,183
Philip Morris Intl Inc	COM	718172109	569	8,522	SH		SOLE		8,192	0	330
Phillips 66	COM	718546104	35,177	408,327	SH		SOLE		403,608	0	4,719
PNC Financial Services Group	COM	693475105	535	4,575	SH		SOLE		4,575	0	0
Procter & Gamble Co	COM	742718109	9,273	100,878	SH		SOLE		91,999	0	8,879
Prudential Financial Inc	COM	744320102	256	3,136	SH		SOLE		3,136	0	0
Qualcomm Inc	COM	747525103	17,873	314,058	SH		SOLE		307,566	0	6,492
RBC Bearings Inc	COM	75524B104	12,435	94,855	SH		SOLE		93,300	0	1,555
Red Hat Inc	COM	756577102	60,045	341,863	SH		SOLE		336,259	0	5,604
Rockwell Automation Corp	COM	773903109	13,247	88,031	SH		SOLE		87,146	0	885
Roper Technologies Inc	COM	776696106	39,468	148,087	SH		SOLE		145,289	0	2,798
Royal Dutch Shell ADR-A	COM	780259206	751	12,895	SH		SOLE		12,715	0	180
SBA Communications Corp-Reit	COM	78410G104	273	1,684	SH		SOLE		1,684	0	0
Schlumberger Ltd	COM	806857108	1,223	33,898	SH		SOLE		32,856	0	1,042
Sherwin Williams Co	COM	824348106	17,579	44,679	SH		SOLE		44,051	0	628
Sirius XM Holdings Inc	COM	82968B103	66	11,500	SH		SOLE		11,500	0	0
Smucker J M Co	COM	832696405	488	5,218	SH		SOLE		5,218	0	0
SPDR S&P 500 ETF	COM	78462F103	10,835	43,355	SH		SOLE		13,322	0	30,033
SPDR S&P M/C 400 ETF	COM	78467Y107	1,651	5,455	SH		SOLE		1,343	0	4,112
Starbucks Corp	COM	855244109	11,427	177,444	SH		SOLE		174,761	0	2,683
State Street Corp	COM	857477103	1,177	18,660	SH		SOLE		460	0	18,200
Stryker Corp	COM	863667101	22,826	145,622	SH		SOLE		142,937	0	2,685
Sysco Corp	COM	871829107	299	4,775	SH		SOLE		4,750	0	25
T Rowe Price Group Inc	COM	74144T108	16,963	183,742	SH		SOLE		180,296	0	3,446
Teleflex Inc	COM	879369106	19,710	76,253	SH		SOLE		75,208	0	1,045
Thermo Fisher Scientific Inc	COM	883556102	36,088	161,258	SH		SOLE		159,497	0	1,761
TJX Companies Inc	COM	872540109	36,871	824,127	SH		SOLE		810,757	0	13,370
Toll Brothers Inc	COM	889478103	7,131	216,554	SH		SOLE		214,309	0	2,245
Torchmark Corp	COM	891027104	9,381	125,865	SH		SOLE		123,533	0	2,332
Toronto-Dominion Bank	COM	891160509	657	13,210	SH		SOLE		13,176	0	34
Total SA ADR	COM	89151E109	375	7,193	SH		SOLE		7,043	0	150
Tractor Supply Co	COM	892356106	5,037	60,368	SH		SOLE		58,743	0	1,625
Travelers Companies Inc	COM	89417E109	430	3,593	SH		SOLE		3,581	0	12
Unilever NV-NY Shares	COM	904784709	635	11,809	SH		SOLE		11,809	0	0
Unilever Plc ADR	COM	904767704	33,129	634,057	SH		SOLE		624,099	0	9,958
Union Pacific Corp	COM	907818108	17,558	127,021	SH		SOLE		124,447	0	2,574
United Technologies Corp	COM	913017109	30,155	283,194	SH		SOLE		276,220	0	6,974
Unitedhealth Group Inc	COM	91324P102	13,787	55,343	SH		SOLE		54,753	0	590
US Bancorp	COM	902973304	37,598	822,704	SH		SOLE		807,640	0	15,064
Valero Energy Corp	COM	91913Y100	207	2,763	SH		SOLE		2,763	0	0
Vanguard REIT ETF	COM	922908553	243	3,252	SH		SOLE		2,720	0	532
Vanguard S&P 500 ETF	COM	922908363	583	2,535	SH		SOLE		2,351	0	184
Vanguard S/C ETF	COM	922908751	1,593	12,071	SH		SOLE		2,016	0	10,055
Vanguard Total Stock Mkt ETF	COM	922908769	3,422	26,812	SH		SOLE		10,164	0	16,648
Verizon Communications Inc	COM	92343V104	1,801	32,031	SH		SOLE		30,982	0	1,049
VF Corp	COM	918204108	4,621	64,769	SH		SOLE		63,663	0	1,106
Visa Inc-A	COM	92826C839	39,077	296,171	SH		SOLE		292,610	0	3,561
Vulcan Materials Co	COM	929160109	986	9,975	SH		SOLE		9,975	0	0
Wal-Mart Stores Inc	COM	931142103	255	2,733	SH		SOLE		2,717	0	16
Walgreens Boots Alliance Inc	COM	931427108	373	5,453	SH		SOLE		5,453	0	0
Walt Disney Co	COM	254687106	41,414	377,690	SH		SOLE		371,723	0	5,967
Waste Connections Inc	COM	94106B101	54,934	739,847	SH		SOLE		727,040	0	12,807
Waste Management Inc	COM	94106L109	341	3,829	SH		SOLE		3,829	0	0
Wells Fargo Co	COM	949746101	287	6,233	SH		SOLE		5,073	0	1,160
Wex Inc	COM	96208T104	249	1,776	SH		SOLE		1,761	0	15
Weyerhaeuser Co	COM	962166104	2,300	105,193	SH		SOLE		103,013	0	2,180
Xylem Inc	COM	98419M100	386	5,790	SH		SOLE		5,790	0	0
Yum Brands Inc	COM	988498101	1,793	19,502	SH		SOLE		19,402	0	100
Yum China Holdings Inc	COM	98850P109	676	20,173	SH		SOLE		20,173	0	0
iShares MSCI EAFE ETF	INTL	464287465	2,416	41,104	SH		SOLE		39,815	0	1,289
Vanguard FTSE All World Ex-US	INTL	922042775	28,199	618,681	SH		SOLE		584,942	0	33,739
Vanguard FTSE Developed Market	INTL	921943858	52,666	1,419,575	SH		SOLE		1,390,627	0	28,948
Vanguard FTSE EM ETF	INTL	922042858	19,104	501,424	SH		SOLE		470,520	0	30,904
Wells Fargo New	PERP PFD CNV A	949746804	252	200	SH		SOLE		200	0	0
Invesco Bulletshares 2019 Corp	BOND FUND	46138J304	3,111	147,702	SH		SOLE		114,391	0	33,311
Invesco Bulletshares 2020 Corp	BOND FUND	46138J502	2,935	139,303	SH		SOLE		109,958	0	29,345
Invesco Bulletshares 2021 Corp	BOND FUND	46138J700	3,491	168,237	SH		SOLE		108,944	0	59,293
Invesco Bulletshares 2022 Corp	BOND FUND	46138J882	3,545	171,981	SH		SOLE		115,229	0	56,752
Invesco Bulletshares 2023 Corp	BOND FUND	46138J866	2,694	133,572	SH		SOLE		84,983	0	48,589
iShares I/T Corporate Bond ETF	BOND FUND	464288638	1,527	29,130	SH		SOLE		25,397	0	3,733
iShares S/T Corporate Bond ETF	BOND FUND	464288646	2,601	50,368	SH		SOLE		45,700	0	4,668
Pimco S/T Muni Bond ETF	BOND FUND	72201R874	267	5,350	SH		SOLE		4,850	0	500
Vanguard Total Bond Mkt ETF	BOND FUND	921937835	550	6,948	SH		SOLE		1,179	0	5,769