Marketable Securities (Tables)

3 Months Ended

Oct. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of financial assets measured at fair value on recurring basis

Fair value measurements at reporting date

	Total								Total
	October 31,								July 31,
Description	2021		Level 1		Level 2		Level 3		2021		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	3,848,599	$	3,848,599	$	–	$	–	$	3,901,093	$	3,901,093	$	–	$	–

Schedule of classified marketable securities

As of October 31, 2021 and July 31, 2021, the Company's marketable securities were classified as follows:

	October 31, 2021								July 31, 2021
			Gross		Gross						Gross		Gross
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value		Cost		Gains		Losses		Value
Mutual funds	$	984,869	$	656,847	$	–	$	1,641,716	$	984,869	$	619,972	$	–	$	1,604,841
Equity securities		1,356,594		850,289		–		2,206,883		1,355,961		940,291		–		2,296,252
	$	2,341,463	$	1,507,136	$	–	$	3,848,599	$	2,340,830	$	1,560,263	$	–	$	3,901,093

Schedule of investment income

Investment income consists of the following:

	Three Months Ended
	October 31
	2021		2020
Interest income	$	–	$	227
Dividend income		6,767		5,823
Gain on sale of marketable securities		–		83,176
Total	$	6,767	$	89,226