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 cs 88579y101 1,652 7,950 SH   SOLE   0 0 7,950
Abbott Laboratories cs 002824100 1,623 20,300 SH   SOLE   0 0 20,300
Abbvie Inc cs 00287y109 2,291 28,428 SH   SOLE   0 0 28,428
Alphabet Inc Cap Stock Cl A cs 02079k305 19,530 16,595 SH   SOLE   0 0 16,595
Alphabet Inc Cap Stock Cl C cs 02079k107 4,632 3,947 SH   SOLE   0 0 3,947
Altria Group Inc cs 02209s103 258 4,499 SH   SOLE   0 0 4,499
Amazon.com Inc cs 023135106 32,801 18,420 SH   SOLE   0 0 18,420
American Express Co cs 025816109 348 3,183 SH   SOLE   0 0 3,183
Amgen Inc cs 031162100 684 3,600 SH   SOLE   0 0 3,600
Anadarko Petroleum Corp cs 032511107 548 12,058 SH   SOLE   0 0 12,058
Apple Inc cs 037833100 22,802 120,041 SH   SOLE   0 0 120,041
AT&T Inc cs 00206r102 2,459 78,405 SH   SOLE   0 0 78,405
Bank of America Corporation cs 060505104 22,184 804,068 SH   SOLE   0 0 804,068
Bristol Myers Squibb Co cs 110122108 2,743 57,503 SH   SOLE   0 0 57,503
Camden Natl Corp cs 133034108 8,748 209,686 SH   SOLE   0 0 209,686
Cantel Medical Corp cs 138098108 13,188 197,166 SH   SOLE   0 0 197,166
CBS Corp Cl B cs 124857202 13,238 278,520 SH   SOLE   0 0 278,520
Chevron Corp cs 166764100 8,154 66,196 SH   SOLE   0 0 66,196
Cigna Corp cs 125523100 442 2,747 SH   SOLE   0 0 2,747
Coca-Cola Co cs 191216100 351 7,500 SH   SOLE   0 0 7,500
Colgate Palmolive Co cs 194162103 1,583 23,100 SH   SOLE   0 0 23,100
ConocoPhillips cs 20825c104 12,624 189,148 SH   SOLE   0 0 189,148
Copart Inc cs 217204106 28,915 477,217 SH   SOLE   0 0 477,217
Costco Wholesale Corp cs 22160k105 20,135 83,154 SH   SOLE   0 0 83,154
CSX Corp cs 126408103 217 2,900 SH   SOLE   0 0 2,900
Deere & Co cs 244199105 320 2,000 SH   SOLE   0 0 2,000
Digimarc Corp cs 25381b101 15,402 490,833 SH   SOLE   0 0 490,833
Disney Walt Co Disney cs 254687106 13,571 122,225 SH   SOLE   0 0 122,225
Dominion Energy Inc cs 25746u109 391 5,100 SH   SOLE   0 0 5,100
Dover Corp cs 260003108 9,455 100,800 SH   SOLE   0 0 100,800
Dowdupont Inc cs 26078j100 12,995 243,754 SH   SOLE   0 0 243,754
Eli Lilly & Co cs 532457108 8,305 64,000 SH   SOLE   0 0 64,000
Emerson Electric Co cs 291011104 10,400 151,893 SH   SOLE   0 0 151,893
Enwave Corp cs 29410k108 1,239 902,860 SH   SOLE   0 0 902,860
Exxon Mobil Corp cs 30231g102 24,818 307,158 SH   SOLE   0 0 307,158
FedEx Corp cs 31428x106 1,412 7,783 SH   SOLE   0 0 7,783
First Bancorp Inc ME cs 31866p102 862 34,572 SH   SOLE   0 0 34,572
FMC Corp cs 302491303 768 10,000 SH   SOLE   0 0 10,000
Gcp Applied Technologies Inc cs 36164y101 257 8,680 SH   SOLE   0 0 8,680
General Electric Co cs 369604103 3,710 371,399 SH   SOLE   0 0 371,399
Genomic Health Inc cs 37244c101 1,138 16,240 SH   SOLE   0 0 16,240
Grace W R & Co cs 38388f108 677 8,680 SH   SOLE   0 0 8,680
Home Depot Inc cs 437076102 25,578 133,294 SH   SOLE   0 0 133,294
Honeywell Intl Inc cs 438516106 18,297 115,131 SH   SOLE   0 0 115,131
Igene Biotechnology Inc cs 451695100 5 8,336,740 SH   SOLE   0 0 8,336,740
International Paper Co cs 460146103 899 19,422 SH   SOLE   0 0 19,422
Johnson & Johnson cs 478160104 1,835 13,125 SH   SOLE   0 0 13,125
JPMorgan Chase & Co cs 46625h100 26,215 258,962 SH   SOLE   0 0 258,962
Kimberly Clark Corp cs 494368103 2,044 16,500 SH   SOLE   0 0 16,500
LCNB Corp cs 50181p100 213 12,400 SH   SOLE   0 0 12,400
Logitech Intl SA cs h50430232 236 6,000 SH   SOLE   0 0 6,000
M & T Bank Corp cs 55261f104 4,716 30,034 SH   SOLE   0 0 30,034
MasterCard Inc Cl A cs 57636q104 24,002 101,942 SH   SOLE   0 0 101,942
McDonalds Corp cs 580135101 6,146 32,366 SH   SOLE   0 0 32,366
Merck & Co Inc cs 58933y105 14,304 171,981 SH   SOLE   0 0 171,981
Microsoft Corp cs 594918104 436 3,700 SH   SOLE   0 0 3,700
Minerals Technologies Inc cs 603158106 8,448 143,694 SH   SOLE   0 0 143,694
Netflix Inc cs 64110l106 660 1,850 SH   SOLE   0 0 1,850
Nextera Energy Inc cs 65339f101 3,964 20,505 SH   SOLE   0 0 20,505
Nike Inc Cl B cs 654106103 15,680 186,198 SH   SOLE   0 0 186,198
Norfolk Southern Corp cs 655844108 10,503 56,200 SH   SOLE   0 0 56,200
Nucor Corp cs 670346105 2,626 45,000 SH   SOLE   0 0 45,000
PepsiCo Inc cs 713448108 588 4,800 SH   SOLE   0 0 4,800
PNC Financial Services Group I cs 693475105 7,561 61,641 SH   SOLE   0 0 61,641
Procter & Gamble Co cs 742718109 2,643 25,400 SH   SOLE   0 0 25,400
Quaker Chem Corp cs 747316107 523 2,610 SH   SOLE   0 0 2,610
Qualcomm Inc cs 747525103 566 9,930 SH   SOLE   0 0 9,930
Schlumberger Ltd cs 806857108 2,470 56,700 SH   SOLE   0 0 56,700
Seagate Technology PLC cs g7945m107 7,764 162,125 SH   SOLE   0 0 162,125
Skyworks Solutions Inc cs 83088m102 6,067 73,555 SH   SOLE   0 0 73,555
Southern Co cs 842587107 207 4,000 SH   SOLE   0 0 4,000
Starbucks Corp cs 855244109 10,713 144,107 SH   SOLE   0 0 144,107
Teleflex Inc cs 879369106 33,449 110,701 SH   SOLE   0 0 110,701
TJX Cos Inc cs 872540109 15,049 282,832 SH   SOLE   0 0 282,832
Union Pacific Corp cs 907818108 20,681 123,688 SH   SOLE   0 0 123,688
United Parcel Service Inc Cl B cs 911312106 715 6,400 SH   SOLE   0 0 6,400
United Technologies Corp cs 913017109 233 1,810 SH   SOLE   0 0 1,810
Verizon Communications Inc cs 92343v104 332 5,617 SH   SOLE   0 0 5,617
Visa Inc Cl A cs 92826c839 17,313 110,843 SH   SOLE   0 0 110,843
VMware Inc Cl A cs 928563402 397 2,200 SH   SOLE   0 0 2,200
Wal Mart Stores Inc cs 931142103 341 3,500 SH   SOLE   0 0 3,500
Waste Connections Inc cs 94106b101 18,176 205,169 SH   SOLE   0 0 205,169
Waste Management Inc cs 94106l109 26,269 252,805 SH   SOLE   0 0 252,805
Zimmer Holdings Inc cs 98956p102 332 2,600 SH   SOLE   0 0 2,600
Alibaba Group Holding Ltd Sp A ad 01609w102 377 2,065 SH   SOLE   0 0 2,065
Fresenius Med Care AG & Co KGA ad 358029106 660 16,280 SH   SOLE   0 0 16,280
Mowi Asa Sponsored Ads ad 624678108 224 10,000 SH   SOLE   0 0 10,000
Royal Dutch Shell PLC Sp ADR A ad 780259206 6,515 104,089 SH   SOLE   0 0 104,089
SPDR S&P 500 ETF TR ui 78462f103 247 875 SH   SOLE   0 0 875
SPDR Series Trust S&P Biotech ui 78464a870 10,905 120,448 SH   SOLE   0 0 120,448
Advantage Funds Inc Stateg Val mf 007568405 428 12,631 SH   SOLE   0 0 12,631
Capital Income Builder Fund mf 140193103 670 11,081 SH   SOLE   0 0 11,081
Dreyfus Large Cap Growth Y mf 261986194 180 14,354 SH   SOLE   0 0 14,354
Fidelity Contrafund Inc mf 316071109 354 28,296 SH   SOLE   0 0 28,296
T Rowe Price New Horizons Fund mf 779562107 3,799 65,272 SH   SOLE   0 0 65,272
Enterprise Products Partners L ml 293792107 233 8,000 SH   SOLE   0 0 8,000
American Tower REIT re 03027x100 315 1,600 SH   SOLE   0 0 1,600
Kimco Realty Corp re 49446r109 2,218 119,875 SH   SOLE   0 0 119,875
Ventas Inc re 92276f100 251 3,933 SH   SOLE   0 0 3,933
Weingarten Realty Investors re 948741103 700 23,832 SH   SOLE   0 0 23,832