Historical Account of Testaceological Writers. 197 



shells of different genera, and also accurate descriptions. There 

 are histories of new species bj the same author in the Nova Acta 

 Acad. Petrop., with figures. These species are Serpula Spirillum, 

 Lepas cariosa, Pholas Teredula, Chiton amiculatus, and Heliv 

 coriacea. 



The 64th volume of the Philosophical Transactions contains some 

 curious facts relative to what has been called the reviviscence of 

 snails, communicated to the Royal Society by 



DR. MACBRIDE. 



This is a subject more particularly interesting to the physiolo- 

 gist, but cannot be considered as foreign to the science of Testa- 

 ceology in general. 



The following year the celebrated 



BONNET 



published some experiments on the regeneration of the head of 

 the common Land-snail, which appear among his other works. 

 These experiments were pursued likewise by Miiller in the Journ. 

 de Physique, and by 



J. AND. MURRAY, 



in a Programma, at Gottingen, the year after Bonnet's observa- 

 tions appeared. 

 This is the proper place to notice the labours of our countryman 



PENNANT, 



whose British Zoology is the earliest Avork professing to treat of 

 the animals of our island after the Linnean method, and who 

 ought, therefore, to be considered as having commenced a new 

 aera among English naturalists. The three first editions of this 



work. 



