29 
normal copper of the hemocyanin, which is probably 
passing through the body in minute amounts, ceases to 
be removed, and so becomes stored up in certain cells.” 
PRELIMINARY EXPERIMENTS AT PIEL. 
Mr. Scott gives me the following report upon his work, 
at the Piel Hatchery, during March and April, 1897 :— 
“In accordance with instructions received from the 
Scientific Sub-Committee, through Prof. Herdman, I went 
to Piel on March 2nd, for the purpose of carrying out the 
various experiments suggested in order to test the suita- 
bility of the water there for fish hatching, and for the 
study of the development and life histories of economic 
marine animals in general. I remained there, with the 
exception of a fortnight when I was recalled to Liverpool 
to assist in the preparations for the Fisheries Exhibition, 
for practically two months. 
‘““The experiments were carried out in the old Life-Boat 
house, which had been fitted up as a temporary laboratory 
and tank house, and the apparatus used was a set of three 
tanks, exactly similar to the ones used in the experiments 
at Port Erin last year (see Report for 1896, p. 12); a few 
smaller tanks and glass aquaria were also employed from 
time to time. Owing to the structure of the place, the lifting 
apparatus, described in our last Report, could not be used 
for circulating the water, so we had to put up a store tank 
capable of holding about 200 gallons, which the bailiffs 
filled up as required; from this tank the water was siphoned 
off into the uppermost of the three tanks and allowed to 
circulate by gravitation throughout the system. The 
apparatus was put into working order with the least 
possible delay, and everything made ready for the recep- 
tion of the fertilized eggs. 
‘“‘ An accident to the steamer, rendering it unfit for sea, 
