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CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) | 3 Months Ended
--- | ---
Nov. 30, 2019 | Nov. 30, 2018
Cash flows from operating activities: |  |
Net income | $ 5,762,465 | $ 633,972
Adjustments to reconcile net income to net cash used in operating activities: |  |
Share-based compensation expense | 105,353 | 103,476
Depreciation and depletion | 304,084 | 239,274
Bad debt (recovery) expense | 0 | (31,233)
Investment in Well Enhancement and Recovery Systems LLC | 0 | 2,615
Interest income and other non-cash items | (105) | (105)
Interest added to receivable from related parties | (10,913) | (9,822)
Deferred income taxes | 718,810 | 0
Proceeds from CAB reimbursement applied to inventories | 4,229,501 | 0
Changes in operating assets and liabilities: |  |
Inventories | 4,777,212 | (3,356,718)
Trade accounts receivable | 221,329 | (469,800)
Prepaid expenses | (107,262) | (138,395)
Notes receivable - related parties | (595) | (7,100)
Other assets | 0 | (90,097)
Accounts payable and accrued liabilities | (386,891) | (1,209,985)
Income taxes | 1,168,309 | 0
Deferred revenues | (2,847,764) | (361,050)
Deferred income - oil and gas lease and water sales payment | 794,148 | (13,934)
Lease obligations - operating leases | (5,647) | 0
Net cash provided by (used in) operating activities | 14,722,034 | (5,729,048)
Cash flows from investing activities: |  |
Investments in water, water systems and land | (2,273,010) | (2,488,788)
Sale and maturities of short-term investments | 5,184,923 | 3,705,101
Purchase of short-term investments | 0 | (5,968,800)
Purchase of property and equipment | (37,147) | (42,923)
Net cash provided by (used in) investing activities | 2,874,766 | (4,795,410)
Cash flows from financing activities: |  |
Proceeds from exercise of options | 0 | 78,251
Payments to contingent liability holders | (2,378) | (3,722)
Net cash provided by (used in) financing activities | (2,378) | 74,529
Net change in cash and cash equivalents | 17,594,422 | (10,449,929)
Cash and cash equivalents - beginning of period | 4,478,020 | 11,565,038
Cash and cash equivalents - end of period | 22,072,442 | 1,115,109
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES |  |
Changes in Inventories included in accounts payable and accrued liabilities | 1,255,164 | 1,399,602
Changes in Investments in water, water systems and land included in accounts payable and accrued liabilities | (737,038) | 930,895
Transfer of income taxes to income taxes receivable | $ 0 | $ 282,820

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