Regulation 3(1) of the Principal Regulations is amended as follows:(a) by omitting the definition of approved first aid kit ;(b) by inserting the following definition after the definition of authorised optometrist :authorised person means a person to whom responsibility for the storage and security of a medicine chest has been given under regulation 92(3) ;(c) by inserting the following definition after the definition of medical institution :medicine chest means a medicine chest supplied under regulation 92 ;