ORDER GASTEROPODA. 53 



by a fact mentioned by Dr. Le^cb, that two individuals 

 of a small species have laid as many as seven hundred 

 and sixty-six eiigs ; and these ejrgs were dried in an 

 oven without destroying their vital powers, since, on 

 being placed in a damp situation, they were afterwards 

 hatched. 



The follov.'ing plan of taking and destroying Slugs 

 was resorted to by a gentleman near Ipswich. Having 

 heard that turnips were employed to entice Slugs from 

 wheat, he caused a sufficient quantity to dress eight acres 

 to be got to<rether, and then, the tO])s being divided and 

 the apples sliced, he directed the nieces to be laid sepa- 

 rately, dressing two rows with them, and omitting two, 

 alternately, till the whole field of eight acres was gone 

 over. On the following morning, he employed two 

 women to examine the tops and slices, and free them 

 from the Slugs, which they threw into a measure ; and 

 when cleared, tliey were laid on those rous that had been 

 omitted the day before. It was observed invariably, 

 that in the rows dressed with the turnips, no Slugs were 

 to be found upon the wheat, or crawlinu" upon the land, 

 though they abounded upon the turnips; while, on the 

 undressed rows, they were to be seen in great numbers, 

 both on the wheat and on the ground. The quantity of 

 Slugs thus collected was nearly a bushel. 



The Woodlike Bulla, {Bulla lignaria.) 



Tme animal of the Bulla is singular, from possessing - 

 within its stomach three pieces of a substance resembling 

 bone; these give that organ the power of crushing or 

 grinding the food, forming a kind of gizzard. The bony 

 portion of this stomach is represented in the foreground 

 in the engraving-. The Bulla lignaria is about two inches 



