PROCEEDINGS OF THE SOCIETY. 271 



objective was not, after all, such a modern invention as was generally 

 supposed. 



The Chairman said this was a very interesting record, showing once 

 more what they seemed to spend their lives in learning — that there 

 was nothing new under the sun. In Hooke's Microscopium the illus- 

 trations were somewhat rough, but there was so much in it that one 

 might almost say of it as used to be said of Leeuwenhoek — that it was 

 never safe to say a thing is new until you had searched Leeuwenhoek. 



Mr. Nelson said that Mr. Powell had just pointed out to him tliat 

 these lenses of Hooke's differed in principle from the immersion objec- 

 tives of the present day, because all of these had flat fronts, whereas in 

 Hooke's the water was applied to a convex surface, and so formed a 

 sort of concave lens, which acted to some extent as a corrective of the 

 chromatism of the glass. 



Mr. Vezey said he had just heard that the small portable Microscope 

 which had been exhibited by Mr. Nelson as the Seaside Microscope, was 

 one made by Messrs. Newton and Co., of Fleet Street, and was on sale 

 now as it had been for the last twenty years. It had been illustrated 

 by a woodcut in their catalogue for a number of years. 



Mr. Swift exhibited a new pattern Microscope which diffei*ed some- 

 what from the usual types, the upper portion being a replica of the 

 Continental form (apparently the first example made by an English 

 firm), except that it was fitted with the Campbell differential-screw fiue 

 adjustment, whilst the lower portion was of the ordinary English type ; 

 the vertical axis had however been thrown out more than usual so as 

 to admit of a larger stage being used. 



The Chairman, in expressing the thauks of the Meeting to Mr. Swift 

 for his exhibit, said that the large stage no doubt took up a considerable 

 space, but it was of great use in a working instrument. 



Mr. C. F. Rousselet read a note with reference to a large number of 

 slides of new, rare, and foreign Eotifera, which were exhibited under 

 numerous Microscopes in the room. The new species all belonged to 

 the genus Synchseta, and many others had been described since the 

 publication of Hudson and C-osse's monograph. Descriptive cards 

 directed attention to the chief points of interest in connection with the 

 specimens shown. In addition to this collection, two specially well 

 mounted slides of Stephanoceros and Floscularia were shown, as illus- 

 trating the possibility of preserving these delicate organisms in a 

 perfectly expanded and lifelike condition. 



The Chairman was sure that every one present would join in passing 

 a very hearty vote of thanks for the very magnificent exhibition which 

 Mr. Eousselet had arranged. His mode of manipulation was probably 

 one of the things in Microscopy which was really new and could not 

 be found in Leeuwenhoek or in Hooke's Microscopium. Those who 

 had seen Mr. Rousselet's very interesting and beautiful specimens would 

 feel that it required nothing to be said by him to recommend them. 



The thanks of the Meeting were unanimously voted to Mr. Kousselet 

 for this very interesting exhibition. 



