British Association for the Advancement of Science. 133 



to the habits of the salmon and aUied species, and with regard 

 to the identity of various young and full grown fish. 



Mr. C. C. Babington made an oral communication concerning 

 some recent additions to the English Flora. — A letter was read 

 from Mr. Garner, on the Beroe pileus, stating that he had not 

 seen in this animal true luminosity, but only a peculiar luminosity 

 in the dark. The external rows of ciliae he believed might pro- 

 duce it. He had remarked, that if only one of the ciliae were 

 removed from this animal, it still continued to vibrate for many 

 hours. He thought the currents in Beroe might be accounted 

 for by cilia3, which he observed to be placed in the whole of the 

 interior of the animal. In the interior of the animal he had ob- 

 served what appeared to him to be sacculi. 



Section E. Medical Science. 



After an introductory address from Dr. Yelloly. President of 

 the Section, a paper by Sir David Dickson was read, containing 

 abstracts of a remarkable case of rupture of the duodenum and 

 of some other interesting cases. 



Mr. Middlemore read a brief notice of the methods which 

 have been used for the removal of capsular cataract, where the 

 opake capsule remains after absorption of the lens, for the pur- 

 pose of introducing to notice an instrument to facilitate the ope- 

 ration of extraction without interfering with the transparent 

 structures of the eye. It consists of a needle, accompanied by a 

 small forceps, the former capable of being withdrawn, leaving 

 the latter to be fixed on the opake membrane and then withdrawn 

 through the sclerotic, through which the needle had been intro- 

 duced. He also detailed a case in which the operation for artifi- 

 cial pupil had been performed with success, and presented the 

 patient for examination. 



Dr. Foville, of Paris, presented a paper, detailing the results 

 of his researches on the anatomy of the brain. He urged the 

 advantages of examining the structure of the brain by manual 

 separation rather than by section, and gave credit to Willis, as 

 being the first advocate of this method. — Prof. Macartney read an 

 essay on the means of repressing hemorrhage from arteries ; giv- 

 ing the preference to metallic ligatures ; and also a paper on the 

 rules for finding with exactness the position of the principal ar- 

 teries and nerves, from their relations to the external forms of the 



