34 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



"It is impossible to state the total number of larvae 

 hatched this year. Messrs. Monaghan and Kidd and I together 

 dealt with nearly 9,000 in the hatching boxes ; and I am not 

 overstating the number when I say that an additional 3,000 to 

 4,000 were lost by death in the pond before we began to count 

 and transfer them to the hatching boxes. The total number of 

 lobsterlings reared to date is 170. Of these 154 were set free, 

 and I am now trying to rear the remaining ones to the adult 

 condition. During the season of 1912 Mr. Gunn dealt with 

 8,227 larvae. Of these 3,107 were set free in the first, second 

 and third stages. Of the remaining 5,120, three hundred and 

 thirty-three were reared to the lobsterling stage, and all but 

 a few set free. 



" I am now satisfied that so far as securing the retention 

 of the eggs upon the swimmerets of the parent lobsters, and the 

 subsequent hatching of practically all the eggs is concerned, 

 the pond fulfils all requirements ; but we still have difficulties 

 to overcome in rearing the larvae through their successive 

 moults to the lobsterling stage." — H. C. Chad wick. 



Other Reports on Work. 



Professor Cole and his party of colleagues and students 

 from Reading were chiefly occupied, as usual, in observing and 

 collecting, and in making injected preparations of various 

 invertebrata for their College Museum. Professor Cole reports 

 to me : — " Our Easter party this year consisted of 9 persons, 

 and the work was as usual largely educational. We brought 

 back for the College Museum, however, a large and magnificent 

 specimen of the Medusa Rhizostoma pulmo, which we have since 

 successfully displayed in a specially constructed tank of teak 

 and plate glass. We also made a number of interesting inj ected 

 specimens for the Museum, of which a beautiful injection of the 

 dermal gills of Asterias, since imitated in other museums, may 

 be specially mentioned." 



