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CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) | 3 Months Ended
--- | ---
Nov. 30, 2018 | Nov. 30, 2017
Cash flows from operating activities: |  |
Net income (loss) | $ 633,972 | $ (96,611)
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |
Depreciation and depletion | 239,274 | 174,914
Recovery of bad debt expense | (31,233) | 0
Equity loss in Well Enhancement Recovery Systems, LLC | 2,615 | 2,616
Share-based compensation expense | 103,476 | 80,193
Interest income and other non-cash items | (105) | 19,517
Interest added to receivable from related parties | (9,822) | (7,058)
Changes in operating assets and liabilities: |  |
Trade accounts receivable | (469,800) | (781,217)
Prepaid expenses | (138,395) | 117,380
Inventories | (3,356,718) | 0
Contract asset | (1,020,146) | 0
Notes receivable - related parties | (7,100) | (37,950)
Other assets | (90,097) | 0
Accounts payable and accrued liabilities | (1,209,985) | (321,708)
Deferred revenues | (361,050) | 0
Deferred oil and gas lease payment | (13,934) | 157,910
Net cash used in operating activities | (5,729,048) | (692,014)
Cash flows from investing activities: |  |
Sales and maturities of short-term investments | 3,705,101 | 0
Purchase of short-term investments | (5,968,800) | 0
Issuance of note receivable - related parties | 0 | (885,586)
Investments in water, water systems, and land | (2,488,788) | (482,082)
Purchase of property and equipment | (42,923) | (26,336)
Net cash used in investing activities | (4,795,410) | (1,394,004)
Cash flows from financing activities: |  |
Proceeds from note receivable - related parties | 0 | 215,504
Proceeds from the issuance of stock | 78,251 | 0
Payments to contingent liability holders | (3,722) | (952)
Net cash provided by financing activities | 74,529 | 214,552
Net change in cash and cash equivalents | (10,449,929) | (1,871,466)
Cash and cash equivalents - beginning of period | 11,565,038 | 5,575,823
Cash and cash equivalents - end of period | $ 1,115,109 | $ 3,704,357

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