ON LAKES, POOLS, ETC. 149 



sometimes reaches the weight of ten pounds ; ^ and 

 he further says, that the fish known in the lakes of 

 Switzerland, Bavaria, and Tyrol by the names of 

 Salbling, Salmling, Sahnarin, Eothforelle, Schwarz- 

 reuter, Alpenforelle, are all of the same species in 

 their variations. Yarrel, backed by Agassiz and 

 Nilsson, avers the identity. The breed might, how- 

 ever, be introduced or crossed with our own with 

 advantage, and this could be very easily effected. 

 As I have previously stated, some hundreds of eggs 

 were sent to the Thames Society, who hatched them 

 and turned them into their river. Unlike our own 

 charr, it never leaves the lakes even to spawn, ac- 

 cording to Dr. Giinther, and, as he stated, is quite 

 unadapted' to rivers ; and here is another striking 

 point of difference from some of our charr, as in some 

 of our lakes the charr certainly do enter the rivers to 

 spawn. 



I have not enjoyed opportunities of studying the 



1 If the Ombre Chevalier ever reaches such a weight as this, there 

 must be some difference in the fish, as with us a charr of over lib. 

 weight is a rarity, and one of 21bs. is scarcely ever known. Dr. 

 Giinther, who has just published an interesting paper on the charr, 

 in the proceedings of the Zoological Society, makes a strong dis- 

 tinction between the Umbla and Salvelinus. He says that there 

 are at least three species in Europe not identical with our British 

 charrs, and the British charrs are also of three different species. 

 According to him, the Ombre Chevalier is the Salmo Umbla. 



