894 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Test No. 20.— Bath 31o. 



In ice broken to the size of a waluut, with sufficient sea- water to fill 

 interstices ; deptli enough to cover bulbs. 



Test No. 21. 



In a large cake of ice auger-boles were bored and the bulbs of the 

 standard and successively the two Casellas, Nos. 7 and 8, were placed in 

 the holes, and then packed firmly with finely scraped ice. j^o. 1 fell to 

 32°.5 very quickly, and then, although looked at every 20 seconds, 

 never varied a particle. The ice was in the shade, and the temperature 

 670. 



Test No. 22. 



ISTo. 7, from a low temperature, was brought up with warm water, and 

 when at 70'^, and rising moderately fast, placed in the ice as before. 

 No. 1 maintaining 32^.5 throughout. 



