Popular Science Lectures. 403 



potential energy or is rejected as heat. Detailed refer- 

 ence was then made to the utility and advantages of 

 condensing and non-condensing engines in the sugar 

 industry, and the advantages of compound over single 

 cylinder engines. 



9. — "SOME INDIAN GAMES." 



Delivered on Wednesday, September 25th, by E. F. im Tkurn, -l/./l. 

 (OxonJ, Special Magistrate, Pomeroon. 



This leclure, which is incorporated in the paper on 

 Primitive Games, page 270, was illustrated by Ma %ic 

 Lantern slides, prepared by Mr. H. H. Cunningham, 

 and exhibited by Mr. E. C. Luard. 



10. —"some fragments from the natural HISTORY OK GUIANA." 



Delivered on Tuesday, November 26th, by J. J, Quclch, B. St . (Loud.) 

 C.M.Z.S., Curator of the Museum. 



The lecturer began by limiting the scope of his 

 remarks to the consideration of the type of organisation 

 presented by the Marsupials, the Edentates, the tapir, 

 and the Platyrhine monkeys of the colony, and to the 

 distribution and origin of these local types. The forms 

 allied to these types in different parts of the world, were 

 referred to ; the great zoological regions were described ; 

 and the nature of the Fauna in the most recent of the 

 zoological periods, as denoted by fossil forms, was pointed 

 out and contrasted with these recent types. The earliest 

 types, related to those selected, were then pointed out, 

 and the lines of their modification and the path of 

 migration to the Southern Continent indicated. 



The leclure was illustrated by specimens and diagrams 

 3E2 



