THE CHARS. 
261 
Novemter he mingled together the milt and roe of living 
Chars; and then he distributed the grains, some in shallow 
earthen pans with or without gravel, and some in finger glasses; 
and then he covered the contents with water obtained from a 
spring, to the depth of three or four inches. This water was 
changed twice a day, with a temperature between 50° and 55°, 
and the young ones were produced in from forty-five to sixty- 
six days. These young Chars were very active, and readily hid 
themselves under stones; but it was six weeks from what may 
be termed their birth before the remains of the egg had become 
absorbed into the body, and they stood in need of a further 
supply of food. It may be questioned, however, whether 
the temperature here noted had not quickened their eaidy 
development and subsequent growth in a higher degree than 
is natural to them; and also whether other unusual circumstances, 
as the absence of running river water had not a disturbing 
influence on their vdtiniate fate. Although so much smaller 
fish the grains of roe in a Char are little less in size than 
those of a Salmon, and may be supposed subject to the same 
laws of atmospheric action, in conformity with which Dr. Davy 
admits that with a lower temperature the extrication of the 
young will be so much the longer delayed. 
