15 



mate result of the extinction of the last fish. The interest of the 

 public is that the fish be continued in the river. A. change in the 

 law that will omit August and September from the close season can- 

 not but result in material and permanent injury. 



TEMPERATURE OF AIR AND WATER. 



The following statistics will be found of niuch importance. They 

 exhibit the temperature of the water and air at two stations, each on 

 the Sacramento and San Joaquin Rivers, taken for three years dur- 

 ing the months the great army of salmon are passing up to their 

 spawning grounds. They will show conclusively that the Sacra- 

 mento salmon lives for weeks, if not months, in water much warmer 

 than any other fish of the same family. They also show the strong 

 probability that these fish may be successfully introduced into rivers 

 in still lower latitudes than those of which they are native — without 

 doubt into the waters that flow into the Gulf of Mexico, and with 

 many prospects of success into the riVers of Europe emptying into 

 the Mediterranean : 



