TRANSACTIONS OF THE SECTIONS. 135 



produced where there was no migration ; and, on the other hand, blood-cells were 

 seen actively migi-ating where all local inflammation had heen carefully avoided. 



On the Physical Helations of Consciousness ami the Seat of Sensation : a Theory 

 proposed*. By Professor John Cleland, M.D. 



On a rare and remarJcahle Parasite from the Collection of the Eev. W. Dallinger. 

 By Dr. Cobbold, F.E.S., F.L.S. 



The author called attention to a microscopic preparation from Mr. Dallinger's 

 cabinet marked " Hydatid from the Human Brain." It was clearly a cysticercus, 

 diflering, however, as regards its hooks, from the ordinary measle infesting man 

 and the pig. At first sight its appearance reminded him of Dr. Weinland's Ci/s~ 

 ticei'cus acanthotrias, as given in his ' Beschreibung zweier neuer Tsenioiden aua 

 dem Menschen,' a commimication published in 1851. A further examination 

 would be necessary before finally pronouncing upon this point; but he was in- 

 clined to regard Dr. Weinland's triple-crowned cysticercus as a variety of a 

 hitherto imdescribed tapeworm, of which this specimen was the true normal 

 representative in the larval state. At all events, it was a distinct form of armed 

 cysticercus from the human brain, having been originally sent to Mr. Dallinger by 

 a student at St. Bartholomew's Hospital. 



Reniarls on the Heart of a Chinese Dog containing Hcematozoa, received from 

 R. Swinhoe, Esq., H B.M. Consul, Amoy, China. By Dr. Cobbold, F.E.S., 

 F.L.S. 



The author exhibited the heart in question, and gave an account of the zoological 

 position and afiinities of its contained nematode parasites. He remarked on the 

 endemic character of the helminthiasis thus set up amongst the dogs of China, 

 adding that the animal in question had, according to Mr. Swinhoe, "died at 

 Shanghae in the month of April 1869, after three days of great sufiering." He 

 referred to similar preparations in the possession of Prof. Bennett of Edinburgh, 

 and the Cui-ators of the Museum of the Army Medical School at Netley. He dis- 

 puted the question of its identity with M. Bohe Moreau's so-called Spirojdera 

 sanguinolenta, showing also that it had no genetic relation to the Filaria papillosa 

 hcematica of Messrs. Grube and Delafond. The author had already discussed the 

 probable nature of these latter haematozoa in his memoir " On the Prevalence of 

 Entozoa in the Dog," first communicated to the Linnean Society, 



Notice respecting the Emhrijoncd Development of the Hcematozoon Bilharzia, 

 By i)r. Cobbold, F.R.S., F.L.S. 



The author commenced by a reference to the researches of Bilharz, Giiesinger, 

 Leuckart, Weinland, and Harley in reference to this parasite, and remarked upon 

 the severe endemics occasioned by its prevalence in Egypt, at the Cape, and at the 

 Mam-itius. He himself had first discovered this parasite in England when dis- 

 secting an African monkey which had died at the Zoological Society's menagerie, 

 Regent's Park. The grounds on which he had altered the generic title (from 

 Didoma to Bilharzia) were recognized as just, both abroad and at home. He had 

 fully investigated the characters presented by the eggs, their contained embryos, 

 mode of egress, movements, alterations of form, rapid growth, structm-e, behaviour 

 under reagents, and various other particulars. He had likewise sought to rear 

 them in slugs, insect-larvse, Entomostraca, Gammari, and various fishes. From a 

 patient under his care the author procured at least 10,000 eggs daily ; and from 

 these he reared ciliated cone-shaped embryos not unlike those of the common fluke- 

 and shoMdug a beautiful water-vascular system of vessels under high powers. 



* Printed in extenso in the ' Journal of Anatomy and Physiology,' November ] 870. 



