22 



INSECT MANUFACTURES. 



LADDER SPUN BY 



that perfectly smooth sur- 

 face. Up this ladder the 

 creature crawled, and thus 

 easily and expeditiously 

 made its escape. 



Silkworms abound in 

 our own country, as well 

 as in others; but the silk 

 they spin is too fragile and 

 scanty to be employed for 

 other purposes than their 

 own. It is different with 

 some of the caterpillars of 

 India. Although the great 

 supply of silk is there ob- 

 tained, as with us, from 

 the silkworm of the mul- 

 berry tree, yet the cater- 

 pillars of various moths also 

 furnish a considerable quan- 

 THE tity. The most important of 



Arindy silkworms, both natives of Bengal. The 



