Notes and Comments. 3 
formerly the Hull Junior Naturalists’ Society. As both Sheffield 
and Hull had successful scientific societies before the formation 
of the newer societies mentioned, it is clear that, as a rule, 
there is not room for more than one society of this kind in any 
town. From what has recently taken place it is apparent 
that pur remarks in reference to the publications of the Hull 
Junior Society, made in this journal some little time ago, 
have been justified. 
HYDROID ZOOPHYTES OBTAINED BY HULL TRAWLERS. 
From Dr. James Ritchie we have received a copy of his 
Portion of hydroclade, with hydrothece, * 50. 
s.Ss. = Supracalycine sarcotheca; 1.sept. = internal 
Colony of Cladocarpus campanulatus, nat. size. S©PtU™; n=node ; h=hydrotheca ; b—upper border 
4 of deeply staining portion; 7.s.=mesial sarcotheca. 
paper on “Some Northern Hydroid Zoophytes obtained by 
Hull Trawlers ; with description of a new species of Plumu- 
larian,’ which is reprinted from the Proceedings of the Royal 
Physical Society of Edinburgh, Vol. XVIII, No. 4. Dr. 
Ritchie figures and describes the specimen under the name 
of Cladocarpus (2?) campanulatus. He also describes Halicorn- 
aria integra, G. O. Sars., a rare species. 
EVOLUTION OF THE CUCKOO. 
The evolution of the cuckoo by natural selection, says 
Mr. G. W. Bulman in Kunowledge, bristles with difficulties. 
Even if we imagine that a stage has been successfully reached 
where the habit of depositing its eggs in another bird’s nest 
has been developed, a number of special points still call for 
1913 Jan. I. 
