American Fisheries Socvety. aE 
to the increase in the size of eggs during the period of ineuba- 
tion. In connection therewith Mr. von Bayer has prepared a 
diagram based upon which, after knowing the diameter of the 
egg, one can ascertain the number of eggs to the quart. This is 
especially useful in establishing the number of eggs to a quart 
where the actual number has not been ascertained by. counting, 
as frequently happens in taking up the propagation of a new 
species. It is thought it will be especially useful in the propa- 
gation of fish the eggs of which have a small diameter. 
