﻿Nov., 1858.] 



ELLIOTT SOCIETY. 



291 



Kirby & Spence's Entomology, London, 1856; Granville's 

 Art of Embalming Mummies, from the Philosophical Trans- 

 actions, 1825. 



Report of the Superintendant of Education for Lower 

 Canada. Legislative Document. 



Prof. L. R. Gibbes read a paper " On a convenient form of 

 Aspirator." 



On a convenient form of Aspirator, by Prof. L. R. Gibbes. 

 The Aspirator is a well known and valuable instrument in 

 pneumatic researches, and several forms of it have already been 

 proposed, or are in actual use. The principles involved in its 

 construction are familiar to all. I cannot venture, therefore, to 

 bring forward any points in the construction of the present instru- 

 ment as actually new, but its form is so convenient and its con- 

 struction so easy, that I do not hesitate to make it known. 



This Aspirator (figured in the above wood cut) consists of a tin* 

 cylinder, 20 inches in height, and 15 inches in diameter, divided 



* By tin, I mean throughout, tinned sheet-iron. 



