).] 



NEW-YORK MICROSCOPICAL SOCIETY. 



69 



a chain. Slide, No. 36 shows a few of the egg-tubes, the nuclei 

 appearing quite distinct. The epithelial cells of each egg are 

 very marked. Few slides can be more interesting, when one 

 understands the progressive development of the eggs. 



Slide, No. 37 is interesting as showing the eggs taken from a 

 nest and stained in picro-carmine. Those which have not 

 undergone much development seem to be only stained yellow, 

 while those whose cell-tissue has started are stained carmine. 



The ganglion — Slide, No. 38 — will be of interest from its 

 large size. I should expect that the queen would have periods 



Fig. 9.—Eutermes up. «, %vorker (X 5.); 6, soldier (X 5.) ; c, queen, before swarming- 

 d, queen after impregnation ; e, queen matured, (e, d, e, natural size.) 



of repose as well as of activity. This is true of the workers. 

 The malpighian vessels are very large and prominent, as would 

 be expected. 



The head of a queen — Slide, No. 40 — resembles that of a 

 worker, though much larger, and it has eyes. 



The destruction of wood-work on the Isthmus, by the com- 

 bined action of fungi and Termites, cannot be estimated. The 

 loss to the Panama Railway Company, and to the Panama Canal 

 Company is many millions of dollars. Much of the plant of the 

 latter has been rendered useless by these two agencies. When 



