TWO YOUNG NATURALISTS. 179 



have been discovered in the formations of the Tertiary 

 epoch. But to return to our native reptiles : I shall 

 remind you of the lizards, literally our friends, for 

 they are easily tamed." 



" I should think so ! " exclaimed Eene ; "I kept a 

 whole tribe of them in my desk at school." 



" The so-called salamanders, to which in old days 

 wonderful properties were attributed, amongst others 



CAPILLARY NETWORK OF THE FROO's FOOT \ A, ARTERY; 

 C. CAPILLARY ; V, VEIN. 



that they could withstand fire. Speaking of that, I 

 often wonder what fables the ancients might have 

 manufactured about the axolotls, the strange reptiles 

 that are imported here from Mexico, and are beginning 

 to replace in aquariums the gold-fish now become 

 rather too commonplace. Finally come the frogs, 

 already alluded to. They supply us also with a ready 

 means of observing the circulation of the blood. This 



