204 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



normal copper of the haemocyanin, 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 Keport 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, 



