Marketable Securities (Tables)

9 Months Ended

Apr. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of financial assets measured at fair value on recurring basis

	Total								Total
	April 30,								July 31,
Description	2022		Level 1		Level 2		Level 3		2021		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	3,374,954	$	3,374,954	$	–	$	–	$	3,901,093	$	3,901,093	$	–	$	–

Schedule of classified marketable securities

	April 30, 2022								July 31, 2021
			Gross		Gross						Gross		Gross
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value		Cost		Gains		Losses		Value
Mutual funds	$	962,518	$	361,703	$	–	$	1,324,221	$	984,869	$	619,972	$	–	$	1,604,841
Equity securities		1,150,072		900,661		–		2,050,733		1,355,961		940,291		–		2,296,252
	$	2,112,590	$	1,262,364	$	–	$	3,374,954	$	2,340,830	$	1,560,263	$	–	$	3,901,093

Schedule of investment income

	Three Months Ended				Nine Months Ended
	April 30				April 30
	2022		2021		2022		2021
Interest income	$	2	$	271	$	3	$	565
Dividend income		3,465		7,689		160,553		90,380
Gain on sale of marketable securities		–		–		48,213		83,176
Total	$	3,467	$	7,960	$	208,769	$	174,121