﻿I 24 



FIELD AND FOREST. 



finally reduced the number in which the experiment \va.; fairly tried 

 to eight. Of these, three came out successfully, the chrysalids main- 

 taining their hold of the caterpillar-skin until they had succeeded in 

 fastening themselves by their anal hooks to the silk to which the cat- 

 pillars were attached. The other five, as might have been expected 

 of all, fell to the ground for want of the suspensory girdle. Counting 

 the case last year, here then are no less than four out of nine caterpil- 

 lars of the Sitccincti r when artificially placed in the conditions of the 

 Suspendi, adapting themselves to circumstances so greatly changed, 

 and whether by plasticity of instinct or reversion to ancestral habit 

 accomplishing a very difficult operation no less successful. — Nature. 



The Locust in England. — Mr. H. W. Livett writes to Science 

 Gossip, that a specimen of the true migratory Locust, Pachytylus mi- 



Fig. 3, b. Pachytylus Migratorius. 



eratorius, was recently found in a bean-field near Wells, Somerset. 

 Upon comparison, it was identical with specimens in his cabinet from 

 Australia and Egypt, and was very different from the large green grass- 



