65 



for pond culture * it is a matter of common knowledge 

 that eels and certain species of mullet have been found by 

 experience to possess the widest range of tolerance, the 

 bass not far behind, and Bullo has compiled a table 

 giving the maximum and minimum range of tolerance of 

 salinity for these and other lagoon fish. The figures 

 given are admittedly tentative, the author stating that the 

 table is founded on deductions from rough data provided 

 by the empirical working of Italian fish-farms ; it cannot 

 be accepted except as an approximate guide. It is 

 probably unreliable in details, but since it is almost the 

 only tabulation of the kind we possess, it will be of use 

 to reproduce it here. The figures are as follows : — 



Table showing the limits of salinity tolerated by the principal animals 

 reared in Italian lagoons, after Bullo. f 



Name. 



Fishes. 

 Goby {Gobius lota) 

 Golden mullet {Mugil auratus) 

 Smelt {Atherina Boyeri) 

 Sea-bream {S partis aura fa) ... 

 Sole {Solea vulgaris) ... 

 Plaice {Platessa passer) 

 Leaping mullet {Mugil salt ens) 

 Thick lipped mullet {Mugil chela) ... 

 Bass {Lab rax lupus) 

 Grey mullet {Mugil capita) ... 

 Large headed mullet {M. cephalus) ... 

 Eel {Anguilla vulgaris) 



Crustaceans. 



Common shore crab {Carcinus j/iaenas) 

 Common shrimp {Crangon vulgaris) 



Molluscs. 



Common cockle {C. edule) ... 

 Edible mussel {M. edulis) ... 

 Oyster {Oslrea edulis) 



* Anadromous fish such as the salmon and the sturgeon are excluded for 

 obvious reasons. 



f Loc. 

 5 



cit. p. 176. 



