540 



PROCEEDINGS OF THE SOCIETY. 



MEETING 



Held on the 16th of June, 1909, at 20 Hanover Square, W. 



E. J. Spitta, Esq., M.R.C.S., etc., Vice-President, 



in the Chair. 



The Minutes of the Meeting of the 19th of May last were read and 

 confirmed, and were signed by the Chairman. 



The List of Donations to the Society, exclusive of exchanges and 

 reprints received since the last Meeting, was read. 



From 

 Hans Hauswaldt, Interferenz-Erscheinungen an doppeltbreehenden \ ,.- j 

 Krystallplatten ini Konvergenten polarisirten Licbt. (4to, Mag- L p 7 ,, 



deburg, Job. Gottl. Hauswaldt, 1902) 



Hans Hauswaldt, Interferenz-Erscbeinungen ini polarisirten Licbt. 1 j-.-,, 

 NeueFolge. (4to, Magdeburg, Job. Gottl. Hauswaldt) / W * 



The thanks of the Society were voted to Madame Hauswaldt for the 

 two volumes presented. 



Dr. Hebb said that since their last Meeting the Society had pur- 

 chased a very interesting old Microscope by George Adams, which was 

 in remarkably line condition, almost as good as new. A description of 

 the instrument written by Mr. F. A. Parsons, was read to the Meeting, 

 and the Microscope itself was exhibited in the room. 



The Chairman called the attention of the Meeting to an exhibition 

 by Dr. J. A. Braxton Hicks, of a number of the better known Tropical 

 Parasites which were the active causes of various diseases, — and asked 

 Dr. Hicks to give some description of the examples shown. 



Dr. Hicks said he had arranged these objects under 16 Microscopes 

 on the table as follows : — 



1. Plasmodium malarise, showing " Daisy " forms or " rosette " stage 

 of the Parasite of the Quartan Malaria just previous to the production of 



a rigor. 



2. Plasmodium vivax, the Parasite of Benign Tertian Malaria, which 

 had attained its full growth and was just ready to produce a rigor in the 

 patient. (Showing " rosettes.") 



3. This was a remarkable preparation (known as Sub -Tertian 

 Malaria) showing the crescent form of Malignant Malaria and a double 

 infection of Benign Tertian Malaria, obtained from the blood of the 

 same patient. 



4. Amoeba di/senterise, the Parasite of Amoebic Dysentery. . 



5. The adult worm of Bilharzia hsematobia (Sckistosomwn hsemato- 

 Mum), showing the typical anterior and ventral suckers and the 

 gynaecophoric canal. 



