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
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
AMERICAN FUNDS WASHINGTON MUTU MF 939330825 742 16,453 SH   SOLE   0 0 16,453
FIDELITY 500 INDEX FUND MF 315911750 1,194 12,057 SH   SOLE   0 0 12,057
FIDELITY CONTRAFUND MF 316071109 971 77,642 SH   SOLE   0 0 77,642
FRANKLIN INCOME ADV CL AD MF 353496847 76 33,257 SH   SOLE   0 0 33,257
INVESCO GLOBAL CORE EQUITY CL MF 00141L798 206 14,415 SH   SOLE   0 0 14,415
MFS MASSACHUSETTS INV TRUST CL MF 575736400 666 22,345 SH   SOLE   0 0 22,345
MFS SER GROWTH FUND CL I MF 552985863 203 1,832 SH   SOLE   0 0 1,832
NUVEEN INSD DIV ADV MUNI FD CO MF 67071L106 649 42,948 SH   SOLE   0 0 42,948
NUVEEN MD PREMIUM INC MUNICIPA MF 67061Q107 288 23,025 SH   SOLE   0 0 23,025
PUTNAM MUNI OPPORTUNITIES TR S MF 746922103 150 12,262 SH   SOLE   0 0 12,262
T ROWE PRICE ST TAX FREE INCOM MF 77957R101 258 23,997 SH   SOLE   0 0 23,997
T. ROWE PRICE BLUE CHIP GROWTH MF 77954Q106 231 2,071 SH   SOLE   0 0 2,071
T. ROWE PRICE HIGH-YIELD MF 741481105 73 11,268 SH   SOLE   0 0 11,268
T. ROWE PRICE SMALL-CAP VALUE MF 77957Q103 398 8,846 SH   SOLE   0 0 8,846
VANGUARD WINDSOR FUND ADMIRAL MF 922018304 601 9,719 SH   SOLE   0 0 9,719
3M CO. COM 88579Y101 3,801 18,292 SH   SOLE   0 0 18,292
ABBOTT LABORATORIES COM 002824100 7,806 97,652 SH   SOLE   0 0 97,652
ABBVIE INC COM 00287Y109 1,475 18,302 SH   SOLE   0 0 18,302
ADOBE SYSTEMS INCORPORATED COM 00724F101 3,796 14,245 SH   SOLE   0 0 14,245
AIR PRODUCTS & CHEMICALS COM 009158106 258 1,351 SH   SOLE   0 0 1,351
ALLSTATE CORPORATION COM 020002101 759 8,058 SH   SOLE   0 0 8,058
ALPHABET INC NON-VOTING CL C COM 02079K107 6,535 5,570 SH   SOLE   0 0 5,570
ALPHABET INC VOTING CL A COM 02079K305 574 488 SH   SOLE   0 0 488
ALTRIA GROUP COM 02209S103 253 4,400 SH   SOLE   0 0 4,400
AMAZON.COM INC COM 023135106 7,533 4,230 SH   SOLE   0 0 4,230
AMERICAN EXPRESS INC COM 025816109 2,842 26,000 SH   SOLE   0 0 26,000
AMGEN INC COM 031162100 983 5,176 SH   SOLE   0 0 5,176
ANADARKO PETROLEUM CORP COM 032511107 425 9,344 SH   SOLE   0 0 9,344
APPLE INC COM 037833100 7,911 41,647 SH   SOLE   0 0 41,647
AQUA AMERICA COM 03836W103 5,900 161,919 SH   SOLE   0 0 161,919
ARCHER DANIELS MIDLAND CO COM 039483102 1,212 28,111 SH   SOLE   0 0 28,111
AT&T CORP NEW COM 00206R102 1,929 61,527 SH   SOLE   0 0 61,527
ATMOS ENERGY CORP COM 049560105 1,743 16,935 SH   SOLE   0 0 16,935
BALL CORP COM 058498106 226 3,900 SH   SOLE   0 0 3,900
BANK OF AMERICA COM 060505104 1,123 40,718 SH   SOLE   0 0 40,718
BANK OF NEW YORK MELLON CORP COM 064058100 1,052 20,864 SH   SOLE   0 0 20,864
BECTON DICKINSON COM 075887109 10,847 43,436 SH   SOLE   0 0 43,436
BERKSHIRE HATHAWAY INC DEL CLA COM 084670108 3,916 13 SH   SOLE   0 0 13
BERKSHIRE HATHAWAY INC DEL CLA COM 084670702 702 3,494 SH   SOLE   0 0 3,494
BOEING COM 097023105 3,775 9,898 SH   SOLE   0 0 9,898
BP PLC SPONS ADR COM 055622104 331 7,567 SH   SOLE   0 0 7,567
BRISTOL-MYERS SQUIBB COMPANY COM 110122108 764 16,023 SH   SOLE   0 0 16,023
C S X CORPORATION COM 126408103 539 7,200 SH   SOLE   0 0 7,200
CABLE ONE INC COM 12685J105 370 377 SH   SOLE   0 0 377
CATERPILLAR INCORPORATED COM 149123101 4,991 36,836 SH   SOLE   0 0 36,836
CHEMOURS CO COM 163851108 26,974 725,884 SH   SOLE   0 0 725,884
CHEVRON CORP COM 166764100 7,566 61,424 SH   SOLE   0 0 61,424
CHURCH & DWIGHT CO INC COM 171340102 10,909 153,158 SH   SOLE   0 0 153,158
CIMAREX ENERGY CO. COM 171798101 265 3,795 SH   SOLE   0 0 3,795
CISCO SYSTEMS INC COM 17275R102 7,565 140,109 SH   SOLE   0 0 140,109
COASTAL CARIBBEAN OILS & MINER COM 190432203 0 69,910 SH   SOLE   0 0 69,910
COCA-COLA COMPANY COM 191216100 1,935 41,300 SH   SOLE   0 0 41,300
COLGATE-PALMOLIVE COMPANY COM 194162103 429 6,252 SH   SOLE   0 0 6,252
COMCAST CORP NEW CL A COM 20030N101 335 8,380 SH   SOLE   0 0 8,380
CONOCOPHILLIPS COM 20825C104 369 5,534 SH   SOLE   0 0 5,534
CORNING INC. COM 219350105 804 24,300 SH   SOLE   0 0 24,300
CVS CAREMARK CORPORATION COM 126650100 456 8,450 SH   SOLE   0 0 8,450
DANAHER CORP COM 235851102 558 4,225 SH   SOLE   0 0 4,225
DENTSPLY SIRONA INC COM 24906P109 2,232 45,007 SH   SOLE   0 0 45,007
DISCOVER FINANCIAL SERVICES COM 254709108 617 8,677 SH   SOLE   0 0 8,677
DOMINION RESOURCES INC OF VA COM 25746U109 4,057 52,926 SH   SOLE   0 0 52,926
DOVER CORPORATION COM 260003108 214 2,285 SH   SOLE   0 0 2,285
DOWDUPONT INC. COM 26078J100 176,837 3,317,146 SH   SOLE   0 0 3,317,146
DTE ENERGY COM 233331107 376 3,011 SH   SOLE   0 0 3,011
DUKE ENERGY CORP COM 26441C204 1,471 16,347 SH   SOLE   0 0 16,347
ELI LILLY & CO COM 532457108 626 4,822 SH   SOLE   0 0 4,822
EMERSON ELECTRIC CO. COM 291011104 981 14,331 SH   SOLE   0 0 14,331
ENBRIDGE INC. COM 29250N105 983 27,097 SH   SOLE   0 0 27,097
EXELON CORP COM 30161N101 244 4,876 SH   SOLE   0 0 4,876
EXXON MOBIL CORPORATION COM 30231G102 12,470 154,332 SH   SOLE   0 0 154,332
FEDERAL REALTY INV TR S B I COM 313747206 1,533 11,119 SH   SOLE   0 0 11,119
FEDEX CORP COM 31428X106 5,532 30,493 SH   SOLE   0 0 30,493
FISERV INC COM 337738108 265 3,000 SH   SOLE   0 0 3,000
FORTIVE CORP COM 34959J108 298 3,550 SH   SOLE   0 0 3,550
FRANKLIN RESOURCES INC COM 354613101 751 22,669 SH   SOLE   0 0 22,669
GENERAL ELECTRIC COMPANY COM 369604103 2,319 232,108 SH   SOLE   0 0 232,108
GENERAL MILLS INC COM 370334104 729 14,079 SH   SOLE   0 0 14,079
GRAHAM HOLDINGS CO. COM 384637104 238 349 SH   SOLE   0 0 349
HEALTH CARE PPTY INVS COM 40414L109 207 6,624 SH   SOLE   0 0 6,624
HERSHEY COMPANY COM 427866108 1,390 12,102 SH   SOLE   0 0 12,102
HOME DEPOT COM 437076102 946 4,930 SH   SOLE   0 0 4,930
HONEYWELL INTERNATIONAL INC COM 438516106 2,706 17,028 SH   SOLE   0 0 17,028
ILLINOIS TOOL WORKS INC. COM 452308109 9,653 67,257 SH   SOLE   0 0 67,257
INTEL CORP COM COM 458140100 6,708 124,908 SH   SOLE   0 0 124,908
INTERNATIONAL BUSINESS MACHINE COM 459200101 3,184 22,567 SH   SOLE   0 0 22,567
INTERNATIONAL PAPER CO COM 460146103 264 5,709 SH   SOLE   0 0 5,709
INTUIT INC COM 461202103 941 3,600 SH   SOLE   0 0 3,600
ISHARES MSCI EAFE INDEX COM 464287465 388 5,984 SH   SOLE   0 0 5,984
ISHARES NASDAQ BIOTECH INDEX COM 464287556 5,780 51,701 SH   SOLE   0 0 51,701
ISHARES RUSSELL 2000 IDX COM 464287655 4,993 32,612 SH   SOLE   0 0 32,612
ISHARES RUSSELL MIDCAP INDEX COM 464287499 6,773 125,533 SH   SOLE   0 0 125,533
JOHNSON & JOHNSON COM 478160104 15,901 113,749 SH   SOLE   0 0 113,749
JPMORGAN CHASE & CO. COM 46625H100 9,478 93,632 SH   SOLE   0 0 93,632
KELLOGG COMPANY COM 487836108 2,438 42,496 SH   SOLE   0 0 42,496
KEYCORP COM 493267108 198 12,600 SH   SOLE   0 0 12,600
KIMBERLY-CLARK CORP COM 494368103 2,772 22,372 SH   SOLE   0 0 22,372
LABORATORY CORP OF AMERICA COM 50540R409 824 5,387 SH   SOLE   0 0 5,387
LINDE PLC COM G5494J103 378 2,150 SH   SOLE   0 0 2,150
LOCKHEED MARTIN COM 539830109 579 1,930 SH   SOLE   0 0 1,930
LOWES COS COM 548661107 11,913 108,823 SH   SOLE   0 0 108,823
M & T BANK CORP COM 55261F104 2,128 13,550 SH   SOLE   0 0 13,550
MANPOWER INC WISCONSIN COM 56418H100 391 4,724 SH   SOLE   0 0 4,724
MARRIOTT INTERNATIONAL, NEW IN COM 571903202 6,718 53,706 SH   SOLE   0 0 53,706
MC DONALD'S CORPORATION COM 580135101 10,952 57,672 SH   SOLE   0 0 57,672
MEDTRONIC INC COM G5960L103 426 4,682 SH   SOLE   0 0 4,682
MERCK & COMPANY INCORPORATED N COM 58933Y105 6,060 72,864 SH   SOLE   0 0 72,864
MICROSOFT CORPORATION COM 594918104 15,281 129,564 SH   SOLE   0 0 129,564
MONDELEZ INTL INC COM 609207105 237 4,747 SH   SOLE   0 0 4,747
MORGAN STANLEY & CO COM 617446448 629 14,908 SH   SOLE   0 0 14,908
MOTOROLA SOLUTIONS, INC COM 620076307 728 5,184 SH   SOLE   0 0 5,184
NATIONAL FUEL GAS CO COM 636180101 233 3,818 SH   SOLE   0 0 3,818
NESTLE SA REG ADR COM 641069406 210 2,200 SH   SOLE   0 0 2,200
NEXTERA ENERGY COM 65339F101 4,250 21,982 SH   SOLE   0 0 21,982
NORFOLK SOUTHERN CORP COM 655844108 327 1,750 SH   SOLE   0 0 1,750
NORTHERN TRUST CORP COM 665859104 940 10,400 SH   SOLE   0 0 10,400
ORACLE CORP COM 68389X105 423 7,868 SH   SOLE   0 0 7,868
PEPSICO INCORPORATED COM 713448108 11,520 93,999 SH   SOLE   0 0 93,999
PFIZER INCORPORATED COM 717081103 1,590 37,445 SH   SOLE   0 0 37,445
PHILIP MORRIS INTERNATIONAL COM 718172109 431 4,875 SH   SOLE   0 0 4,875
PHILLIPS 66 COM 718546104 440 4,626 SH   SOLE   0 0 4,626
PIONEER NAT RES CO COM 723787107 228 1,500 SH   SOLE   0 0 1,500
PNC FINANCIAL SERVICES GROUP COM 693475105 447 3,644 SH   SOLE   0 0 3,644
POWERSHARES QQQ TR ETF SERIES COM 73935A104 1,116 6,211 SH   SOLE   0 0 6,211
PROCTER & GAMBLE COMPANY COM 742718109 14,114 135,649 SH   SOLE   0 0 135,649
PUBLIC SERVICE ENTERPRISE GROU COM 744573106 285 4,800 SH   SOLE   0 0 4,800
RAYTHEON COMPANY NEW COM 755111507 200 1,100 SH   SOLE   0 0 1,100
SAUL CENTERS INC. COM 804395101 358 6,978 SH   SOLE   0 0 6,978
SELECT SECTOR SPDR TR UTILITIE COM 81369Y886 262 4,500 SH   SOLE   0 0 4,500
SMUCKER J.M. CO COM 832696405 583 5,006 SH   SOLE   0 0 5,006
SOUTHERN COMPANY (THE) COM 842587107 2,809 54,358 SH   SOLE   0 0 54,358
SPDR S&P 500 ETF COM 78462F103 319 1,128 SH   SOLE   0 0 1,128
SYSCO CORPORATION COM 871829107 1,165 17,450 SH   SOLE   0 0 17,450
T ROWE PRICE GROUP INC. COM 74144T108 10,194 101,814 SH   SOLE   0 0 101,814
TARGET CORP COM 87612E106 499 6,220 SH   SOLE   0 0 6,220
TEXAS INSTRUMENTS COM 882508104 686 6,465 SH   SOLE   0 0 6,465
THE TJX COMPANIES COM 872540109 213 4,000 SH   SOLE   0 0 4,000
THE TRAVELERS COS INC COM 89417E109 566 4,127 SH   SOLE   0 0 4,127
THERMO FISHER SCIENTIFIC COM 883556102 450 1,645 SH   SOLE   0 0 1,645
UDR INC COM 902653104 934 20,549 SH   SOLE   0 0 20,549
UNILEVER COM 904784709 280 4,800 SH   SOLE   0 0 4,800
UNION PACIFIC CORP COM 907818108 6,150 36,783 SH   SOLE   0 0 36,783
UNITED HEALTHCARE CORP COM 91324P102 6,132 24,798 SH   SOLE   0 0 24,798
UNITED TECHNOLOGIES CORP COM COM 913017109 7,717 59,870 SH   SOLE   0 0 59,870
US BANCORP DEL (NEW) COM 902973304 230 4,781 SH   SOLE   0 0 4,781
VANGUARD EMERGING MARKETS ETF COM 922042858 799 18,789 SH   SOLE   0 0 18,789
VANGUARD FTSE DEVELOPED MARKET COM 921943858 1,257 30,754 SH   SOLE   0 0 30,754
VANGUARD INFORMATION TECHNOLOG COM 92204A702 43,420 216,417 SH   SOLE   0 0 216,417
VANGUARD MID CAP ETF COM 922908629 5,448 33,888 SH   SOLE   0 0 33,888
VANGUARD REIT ETF COM 922908553 505 5,815 SH   SOLE   0 0 5,815
VANGUARD S&P ETF COM 922908363 869 3,350 SH   SOLE   0 0 3,350
VANGUARD SMALL CAP ETF COM 922908751 4,176 27,328 SH   SOLE   0 0 27,328
VANGUARD TOTAL STOCK MARKET COM 922908769 2,587 17,880 SH   SOLE   0 0 17,880
VERIZON COMMUNICATIONS COM 92343V104 3,883 65,675 SH   SOLE   0 0 65,675
VISA INC CLASS A COM 92826C839 10,729 68,691 SH   SOLE   0 0 68,691
VULCAN MATERIALS CO COM 929160109 284 2,400 SH   SOLE   0 0 2,400
WAL-MART STORES INC COM 931142103 311 3,192 SH   SOLE   0 0 3,192
WALGREENS BOOTS ALLIANCE, INC. COM 931427108 5,078 80,257 SH   SOLE   0 0 80,257
WALT DISNEY COMPANY COM 254687106 6,923 62,352 SH   SOLE   0 0 62,352
WASH REAL ESTATE INV TRUST S B COM 939653101 2,521 88,825 SH   SOLE   0 0 88,825
WASTE CONNECTIONS INC COM 94106B101 337 3,800 SH   SOLE   0 0 3,800
WEINGARTEN REALTY INVS S B I COM 948741103 2,388 81,309 SH   SOLE   0 0 81,309
WELLS FARGO & CO. NEW COM 949746101 5,917 122,465 SH   SOLE   0 0 122,465
WEYERHAEUSER CO COM 962166104 338 12,837 SH   SOLE   0 0 12,837
ZIMMER BIOMET HOLDINGS INC. COM 98956P102 427 3,340 SH   SOLE   0 0 3,340