[889-] 



NEW-YORK MICROSCOPICAL SOCIETY. 



65 



seemed to decrease in size, when near the branches of the tree. 

 Think of the labor involved in carrying up, grain by grain, the 

 pellets to make such a system of galleries ! In comparison 

 man hardly executes such undertakings — certainly not without 

 the aid of machinery. Think of the amount of cement, and its 

 waterproof character required to stand a rain-fall of about 



Fig. T.— Method of escape of Eiderm.es from within a glass jar, by coating the inner 

 surface of the glass with cement, ejected from the eductors of the workers : 

 the area of cemented surface being gradually extended during three days, 

 from the soil in the bottom to the upper edge of the jar, where they escaped. 

 a, a, a, limit of first day's work ; 6, ft, limit of second day's work ; c, c, the 

 third day's work, the two main tracts uniting at the star, and allowing escape 

 at the upper edge of the jar. (Reduced two-thirds.) 



twelve feet per annum ! I did not see nests in the trees, on 

 which I noticed the galleries. But I am informed that they 

 sometimes are seen. A decayed branch, however, might have 

 furnished a supply of food. 



On the stone walls of the church, built at Colon by the Pana- 

 ma Railway Company, were numerous galleries of the Termites 



