190 PBOCEEDINQS OF SOCIETIES. 



Klein's preparations the involution of the blastoderm which went to 

 form the internal ear ; and of that growth outwards of the nervous 

 centre, the form of which might be imagined by picturing to one's self 

 a dumb-bell, in which there was a central raised mass, besides the two 

 terminal knobs, these outer lobes being the rudiments of the most 

 imjDortant membrane of the eye. Then there was a horny layer 

 coming over in front to finish it. There was thus a double process 

 in the formation of the organ of vision. Many fascinating marvels 

 would be witnessed in the formation of these special organs, in the 

 ear not less than the eye ; its first forms, then, the enlargement of the 

 labyrinth and the closing of it in, and the construction of its diiferent 

 parts. It was a subject which the younger Fellows of the Society 

 should take up and work out. 



Dr. Klein then read another paper, "On the Nerves of the Cornea." 



Mr. Stewart (in answer to a question from the President) referred 

 to the observations made by him at a recent meeting, when the ques- 

 tion was introduced whether nerves j)assed in the way described, and 

 repeated his offer to show his prei)aration to anyone who wished to 

 see them. In examining even the small trunks of nerves it could be 

 seen that they were composed of a number of fine fibres, and these 

 fibres could be traced leaving the main skein in which they were 

 associated, somewhat in the same way in which it might be supposed 

 a wire cable could be split up. These fine fibres would be seen to be 

 really formed of a number of laminated fibrillfe, which left the main 

 trunk of nerves in numbers of from 300 to 500, gradually unravelling 

 so minutely, that no graver could represent them. 



A vote of thanks was then unanimously accorded to Dr. Klein 

 for the two papers he had read. 



Dr. Klein then exhibited vertical sections through the blastoderm 

 of the trout, 12, 13, 14, and 18 days old, and some very beautiful 

 prej)arations of fine nerve fibres of the ^frog's cornea, and also of 

 sub-epithelial and intra-ejnthelial fine nerve fibrilke of the rabbit's 

 cornea. 



The meeting was then adjourned until the 3rd April next. 



Donations to the Library and Cabinet from February 7th to 

 Blarch 6th, 1872 :— 



From 



Land and Water. "Weekly llic Editor. 



Nature. Weekly Ditto. 



Athenaeum. Weekly Ditto. 



Society of Arts Journal. Weekly Society. 



Journal of the Linuean Society, No. 66 Ditto. 



Quarterly J(jurnal of the Geological Society, No. 109 Ditto. 



Berichte des Naturwissenschaftlich-medizinschen Ve-'l University Buchhandlung, 



reines in Innsbruck / in Innsbruck. 



Om Siphonodentallum vitrium, &c., nf Dr. Michael) V University Roy ale de 



Sara j Norveje, Cristiania. 



Mc'moires pour scrvir k la connaissance des Crinoides 



vivants, par Micliael Sars Ditto. 



Carcinologiske Lidrag til Norges Fauna, af G. 0. Sars Ditto. 

 Three Pliotograplis of Amphipleura pellucida. By Dr. 



J. J. Woodward, U. S. Anny Author. 



A Safety Stage for Eoss' Microscope J. W. Stephenson, Esq. 



Four Slides of Mycetoma Jahez Hogg, Esq. 



