234 



Portable Gas Lamp. 



and conimmiicating with, a square hollow pedestal of sheet 

 copper. 



a The glass globe fitted with a brass cap at b, firmly screwed 

 into the copper box c, and communicating with it at the aperture 

 d; e is a screw-hole supplied with a valve opening inwards, to 

 which the condensing syringe is attached for the purpose of 

 forcing in the carburetted hydrogen ; / is a brass cap sur- 

 mounted by the stopcock g, of very small bore, opening into 

 the chamber /(, to which the burners are attached. 



Art. VI. On the Manufacture of British Opium. By the 



Rev. G. SWAYNE. 



From the frequent paragraphs which have lately appeared in 

 the public prints on the subject of opium, it should seem that 

 the eyes of the British public are at length beginning to 

 open to the prospect of those advantages which would be 

 likely to accrue to the community, from the introduction 

 of an article of commerce, so much wanted at home, to super- 



