Section III, 1891. 



[ 55 J 



Trans. Roy. Soc. Can. 



VIII. — A New Form of Ether-Oxyyeii Lantern. 



By GrEORGE K,. Prowse, Montreal. 



(Read May 27, 1891.) 

 (Communicated by Dr. A. Johnson.) 



The difficulties commouly incident to the preparation and manipulation of the oxy- 

 hydrogeu light have led me, after a series of experiments extending over many years, to 

 devise and construct a form of optical lantern which may be quickly and easily operated 

 with the least expense and danger, and in which compactness is secured, together with 

 an avoidance of excessive weight. 



The apparatus has been designated the Ethoxycon, as indicating the use of ether and 

 oxygen. It combines both the lantern proper and the gas generator and storage bag or 

 receiver. In general terms, the generating and storage parts consist of a generator or 

 retort for the production of oxygen gas, a filter or washer, a saturator, a regulator and a 

 storage gas receiver. All of these, together with the lantern proper, are contained in a 

 box or case which measures 10 x 1? x 18 inches. This also serves as a stand for the lan- 

 tern when in use. 



The details of construction and operation are as follows : 



The lantern proper, or the optical part of the instrument, consists of the ordinary 



