No. 185. 



ABSTRACT OF THE PROCEEDINGS 



OP THE 



ZOOLOGICAL SOCIETY OF LONDON. 



V November 5th, 1918. 



Professor E. W. MacBride, D.Sc, F.R.S., Vice-President, 

 in the Chair. 



Mr. D. Seth-Smith, F.Z.S., Curator of Birds, exhibited a 

 mounted specimen of a hybrid Cockatoo ( d Roseate dccatua 

 roseicapiUa x $ Lesser Sulphur-Crested C. sulphurea), bred in 

 1917 at Hartwell House, Aylesbury, by Mrs. Lee. 



The Chairman gave an account of a communication by 

 Dr. James F. Gemmill, in which was described the cause of the 

 ciliary action in the internal cavities of the Ctenophore, 

 Fleurohrachia pileus. 



Dr. R. T. Leiper, M.D., D.Sc, F.Z.S., gave a lantern 

 exhibition on Diagnosis of Helminth Infections from the chara- 

 cter of the eggs in the faeces. He stated that, by examination 

 of the faeces of a living animal, the extent and specific nature of 

 most helminthic infections could be accurately determined, and 

 the method had been applied successfully as a routine practice 

 in the case of man, rabbity dog, cat, and pig, and was apparently 

 capable of indefinite extension. 



The eggs of parasitic worms were constant in character and of 

 great systematic importance. The groiind-plan of the egg-shell 

 indicated the genus or even subfamily to which the parasite 



* This Abstract is published by the Society at its ofBces, Zoological Gardens, 

 Rei'ent's Park, N.W., on the Tuesday following the date of Meeting to which 

 it refers. It will be issvied, along with the ' Proceedings,' free of extra charge, 

 to all Fellows who subscribe to the Publications ; but it may be obtained on 

 the day of publication at the price of Sixpence, or, if desired, sent post-free 

 for the sum of Six Shillings per annum, payable in advance. 



