PROCEEDINGS OF THE SOCIETY. 541 



6. The Ova of Bilharzia hsematobia imbedded in the rectal mucosa. 



7. Filaria diurna {Microfilaria loa) in the diurnal blood of a patient, 

 the subject of Calabar swellings. Showing also the sheath and abrupt 

 termination of the nuclear core. 



8. Filar ia perstans, showing the characteristic absence of sheath of 

 this form of Filaria. 



9. Filaria medinensis, Embryo from the uterus of the Guinea Worm. 

 The adult female worm occupies the subcutaneous tissues of the leg, and 

 having pierced the skin discharges the embryos when the leg comes in 

 contact with cold water. These embryos then enter a Cyclops in which 

 they undergo further development, and the water containing the Cyclops 

 being drunk, infects the drinker. 



10. Filaria nocturna, in a section of lung showing the embryos in the 

 pulmonary vessels, where they remain during the day, coming out into 

 the peripheral circulation only at night ; the adult worm causes lym- 

 phatic obstruction and hence elephantiasis. 



11. Filaria nocturna {Microfilaria bancrofti), in the nocturnal blood 

 of a patient with hydrocele. Showing also the characteristic sheath and 

 abrupt termination of the nuclear core. 



12. Trypanosoma gambiense, from the blood of a rat inoculated with 

 the blood of a case of sleeping sickness. 



13. The Leishman-Donovan bodies found in the spleen and liver in 

 cases of Kala-azar. Similar bodies are also found in the pus from Delhi 

 boil, but any relationship between the two has yet to be proved. 



14. Spirochete Obermeieri, Spirillum of Relapsing Fever. 



15. Bacillus Leprse (Hensen's Bacillus), the Bacillus of Leprosy, 

 taken from the nasal mucus of a case of Leprosy. 



16. Bacillus pest is, section of lung from a case of Pneumonic 

 Plague, showing the typical Bacillus in the tissues. 



The Chairman was sure the Fellows present would give a very hearty 

 vote of thanks to Dr. Hicks for this very interestino- exhibit and for the 

 explanatory remarks he had made with reference to the objects shown. 

 Their thanks were also due to Messrs. Leitz and Mr. Ogilvy for the loan 

 of the Microscopes under which the slides had been placed. 



The votes of thanks were put to the meeting and unanimously 

 carried. 



Mr. J. W. Gordon said he had to report that the Society gave an 

 exhibition of Metallurgical Microscopes at the Reception of the Members 

 of the International Congress of Applied Chemistry, on June 1, at the 

 Natural History Museum at South Kensington, on which occasion they 

 were the only Society exhibiting. He had not received any formal 

 acknowledgment from the reception committee, as they had not met 

 since that date, but he had received a letter from the Secretary of the 

 Congress saying that the Society's demonstration had been highly 

 appreciated. He also wished to mention that at the next meeting of the 

 " Brass and Glass " Section on Wednesday, June 23, there would be a 

 demonstration of Petrological Microscopes. 



Notice was given that the Rooms of the' Society would be closed from 

 August 13 to September 13. 



