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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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
LAYNE CHRISTENSEN 4.25% CONVERT DUE 11/15/2018 Convertible Bonds 521050AB0 11,197 15,457,000 PRN   SOLE 0 15,457,000 0 0
WALTER INVTS MGMT 4.5% CONVERT DUE NOV 1, 2019 Convertible Bonds 93317WAA0 1,141 2,000,000 PRN   SOLE 0 2,000,000 0 0
APPLE INC. Common Stocks 037833100 25,731 236,089 SH   SOLE 0 236,089 0 0
ABB LIMITED Common Stocks 000375204 10,536 542,510 SH   SOLE 0 542,510 0 0
ACCENTURE PLC Common Stocks G1151C101 9,210 79,806 SH   SOLE 0 79,806 0 0
APACHE CORP Common Stocks 037411105 1,045 21,412 SH   SOLE 0 21,412 0 0
CHECK POINT SOFTWARE TECH Common Stocks M22465104 14,752 168,656 SH   SOLE 0 168,656 0 0
CHEVRON CORP. Common Stocks 166764100 863 9,050 SH   SOLE 0 9,050 0 0
DISH NETWORK CORP Common Stocks 25470M109 635 13,725 SH   SOLE 0 13,725 0 0
DORCHESTER MINERALS LP Common Stocks 25820R105 1,597 140,230 SH   SOLE 0 140,230 0 0
EMC CORP Common Stocks 268648102 16,296 611,490 SH   SOLE 0 611,490 0 0
ENTERPRISE PRODUCTS PRTNS Common Stocks 293792107 31,061 1,261,597 SH   SOLE 0 1,261,597 0 0
EQUITY COMMONWEALTH Common Stocks 294628102 13,763 487,700 SH   SOLE 0 487,700 0 0
TWENTY-FIRST CENTURY FOX, INC Common Stocks 90130A101 9,776 350,639 SH   SOLE 0 350,639 0 0
GILEAD SCIENCES, INC Common Stocks 375558103 13,963 152,005 SH   SOLE 0 152,005 0 0
ALPHABET INC CL C (GOOGLE C) Common Stocks 02079K107 25,383 34,073 SH   SOLE 0 34,073 0 0
ALPHABET INC CL A (GOOGLE A) Common Stocks 02079K305 17,348 22,739 SH   SOLE 0 22,739 0 0
HCP, INC. Common Stocks 40414L109 2,765 84,878 SH   SOLE 0 84,878 0 0
HONEYWELL INTL INC Common Stocks 438516106 1,523 13,591 SH   SOLE 0 13,591 0 0
INOVALON HOLDINGS INC. (Class A) Common Stocks 45781D101 9,815 529,969 SH   SOLE 0 529,969 0 0
KINDER MORGAN, INC. Common Stocks 49456B101 21,712 1,215,687 SH   SOLE 0 1,215,687 0 0
LAS VEGAS SANDS Common Stocks 517834107 10,971 212,282 SH   SOLE 0 212,282 0 0
MATTEL, INC. Common Stocks 577081102 16,777 499,013 SH   SOLE 0 499,013 0 0
MONSANTO COMPANY Common Stocks 61166W101 17,609 200,691 SH   SOLE 0 200,691 0 0
THE MOSAIC COMPANY Common Stocks 61945C103 9,033 334,569 SH   SOLE 0 334,569 0 0
MATADOR RESOURCES CO. Common Stocks 576485205 853 45,000 SH   SOLE 0 45,000 0 0
NOBLE ENERGY INC Common Stocks 655044105 11,484 365,618 SH   SOLE 0 365,618 0 0
QUALCOMM INC Common Stocks 747525103 30,151 589,581 SH   SOLE 0 589,581 0 0
SCHLUMBERGER LTD Common Stocks 806857108 15,237 206,600 SH   SOLE 0 206,600 0 0
TEVA PHARMACEUTICAL ADR Common Stocks 881624209 14,710 274,896 SH   SOLE 0 274,896 0 0
EXXON MOBIL CORP Common Stocks 30231G102 351 4,196 SH   SOLE 0 4,196 0 0
XYLEM INC. Common Stocks 98419M100 14,108 344,932 SH   SOLE 0 344,932 0 0
SINTANA ENERGY INC. NEW Common Stocks 82938H107 4 52,895 SH   SOLE 0 52,895 0 0