366 



layers. This did not answer so well; what was wanted was clear 

 gelatine of greater thickness. 



Mr. Karop had no doubt that if there was any demand, and 

 the particular colours were ascertained, the gelatine could be 

 manufactured of the right quality. 



The thanks of the Club were voted to Mr. Rheinberg for hia 

 paper and exhibit, and to Dr. Measures for reading the 

 paper. 



Mr. Nelson read a note " On some New Lenses." 



Mr. Ingpen remembered the first instance met with of a lens 

 in which the flints were put outside in the form of a sphere of 

 crown in a shell of flint. This was the construction of some 

 old Steinheils which were a great puzzle at the time to many, 

 but he was able at once to explain their construction in that way. 

 He had also a small telescope with a lens made on this principle, 

 and the definition of which was extremely good. The difficulty 

 in construction was, of course, due to the violent curves, which 

 required so much care in adjustment. These lenses were made 

 a long time ago, but Steinheil got over the whole difficulty felt 

 at the time in this way. 



The thanks of the meeting were voted to Mr. Nelson for his 

 communication . 



The Secretary announced that at the next meeting the mem- 

 bers would be asked to nominate gentlemen to fill vacancies 

 upon the committee at the Annual Meeting in February. They 

 would also be called upon to elect an auditor of the treasurer's 

 accounts for the past year, to be submitted to the Annual Meet- 

 ing. He also said that an application had been received for 

 any help which members were able to render by the exhibition 

 of objects under their microscopes at a series of conversazioni 

 to be held at the Borough Polytechnic on the evenings of 

 December 28th to January 2nd inclusive. 



Announcements of meetings, &c, for the ensuing month were 

 then made, and the usual conversazione followed, at which the 

 undermentioned objects were exhibited. 

 Ophrydium, sp. ? ... 

 Volvox globator 



Head of an Earwig 



Sertularia pumila... 



Cyclosis in the root of Nitella ... 



Mr. J. W. Allen. 

 Mr. W. Burton. 

 Mr. W. Goodwin. 

 Mr. G. T. Harris. 

 Mr. W. R, Traviss. 



