1911] Esterly: Vertical Distvihution of Eucalanus. 3 



Table 2, which follows, shows the hourly averages which have 

 been reckoned in the way already mentioned and arranged 

 according to depths and times of day. The fractions in each 

 column represent the proportion of hauls in M^hich the animals 

 were found, and in all cases the denominator shows how many 

 hauls were made at that depth and within the hours indicated. 

 The first figure in any of the time divisions is the hour at which 

 the earliest- of all the hauls began ; the second figure is the time 

 at which the latest haul was finished. In other words, all the 

 hauls began and ended within the time limits indicated at the 

 head of each column. 



The surface hauls were made between June 21 and July 10 ; 

 the deep hauls between June 21 and November 5, with 22 hauls in 

 June, 37 in July, 5 in September and 9 in November. There 

 seem to be no significant differences between the summer and fall 

 collections in the numbers of animals taken. 



TABLE 2 



The Vertical Distribution of Eucalanus elongatus in Hourly Averages 



AT THE Depths and Within the Times Indicated; 



Surface and Closing Nets 



Time within which the hauls were made 



The figures in this tal)le show (line 1) that Eucalanus is 

 never abundant at the surface, for it was taken there in only four 

 out of 22 hauls ; but when found it is most abundant from 6 to 9 



