15 



Polyzoa, Freshwater J. Gould. 



Protococcus pulvialis W. H. Kead. 



Sheep's Kidney (section of) 1 „ ,, 



„ ^ , -^ ^ ^ R. Nicholson. 



Human do. do. } 



December 7th. — The paper of the evening, by A. Barkon, M.B., M.R.C.S., 

 entitled " Some Remarks on the Disease associated with the Parasite 

 Bilharzia haematobia," was read by Dr. Laekin, M.R.C.S. 



The lecturer gave a short account of the parasitic worm Bilharzia 

 hiematobia, so prevalent in Egypt, Abyssinia and other parts of Africa. He 

 alluded to its discovery in the matui'e condition in the blood vessels of the 

 portal system by Dr. Bilharz, of Caii-o, in 1887, giving subsequently a short 

 account of the life history of the parasite so far as known, and ascribed its 

 presence in man to the drinking of stagnant water containing the embryos 

 of the animal. He subsequently alluded shortly to the commoner diseases 

 in man due to the presence of the parasite, viz : Egyptian dysentery and 

 Egyptian haematuria, and stated in conclusion that out of five specimens 

 received by him from Egypt of the bladders of men dying from hsematuria, 

 fom' showed cancer as well as Bilharzia ova, adding another cause to those 

 already known, where long continued irritation has been found to eventuate 

 in the development of cancers in the locality where the irritation is present. 

 Dr. Baeron considered that during the presence of our troops in Egypt, 

 where the disease appears to be more prevalent than in any other part of 

 Africa, soldiers ought to be supplied with some simple form of pocket filter 

 for use when drinking water from ponds and canals. 



At the Conversazione the following subjects were illustrated : — 



Foraminifera from Hilbre Island Alfred Leicester. 



Insect mimicry F. N. Pierce. 



Leaf of Sundew (Drosera rotundifldra) with Insects 



in situ 1 



_, -„ ., !-J. J. Howell. 



Green Weevil J 



Lung of Serpent, showing capillaries injected W. H. Read. 



Lung and Tongue of a Rabbit (section of) E. F. Stead. 



Micrasterias americana (Desmid) J. Harbord Lewis. 



Ova of Bilharzia haematobia A.Bareon,M.B., M.R.C.S. 



Do. do W. Oelrichs. 



Salt from the mines of Wielsckra, Poland, containing 



hollow cubes filled with brine, and a free air cell 



in each Isaac 0. Thompson. 



Shell, spicules, &c. of Echinus (section of ) J. M. Williams. 



Taste organs F. C. Larkin, M.R.C.S. 



Triceratium favus T. W. Bruce. 



