RIVER GARDENS; 



power is employed, the water becomes heated during 

 some of the processes, and the mill-dams thus 

 artificially warmed (sometimes to a very high tem- 

 perature) have been found to be most favourable 

 reservoirs for the breeding of Gold Fish. In such 

 situations they have not only multiplied exceed- 

 ingly, but have attained to a much greater size than 

 in ordinary waters, however well sheltered. In some 

 cases referred to, the heat of the water appeared too 

 hot for anything living to exist in ; but there are very 

 extraordinary examples of the degree of heat in which 

 fish will not only exist, but thrive. 



Les Fontaines found a fish, the Spams of Lace- 

 pede, flourishing in the hot springs of Barbary, in 

 a temperature of 86 Fahrenheit, and other small 

 fish, of the Mullet and Perch families, have been ob- 

 served in these springs. De Saussure found Eels in 

 the hot springs of Savoy, which raised the thermo- 

 meter to 113 Fahrenheit ; while Bruce, in the hot 

 baths of Teriana, perceived small fish resembling 

 Gudgeons, the water being so hot that he was asto- 

 nished they were not boiled. Broussonet made several 

 experiments to ascertain the extent of the endurance 

 of fish with regard to heated water, and found that 

 many species would live for several days in water 

 in which he could not bear his hand ; and Hum- 



