l^SrliL'^J^Ti'iTwa] PROCEEDINGS OF SOCIETIES. 211 



of veteran Diatomists of that Society slioi;lcI be formed, to whom all 

 new or doubtful forms might be sent for examination or identification. 

 The recommendation aj)pears to me to be a good one, and such a com- 

 mittee might easily guard themselves from the trouble of naming 

 common valves for tyros, by making a rule only to receive sijecimens 

 forwarded to them through some member of the Royal Microscopical 

 Society." 



PKOCEEDINGS OF SOCIETIES.* 



KoYAL Microscopical Society. 



Kixg's College, MmxIi, 1870. 



Eev. J. B. Eeade, M.A., F.R.S., in the chair. 



The minutes of last meeting were read and confirmed, 



A donation from the Royal Society was announced by the Secre- 

 tary, consisting of certain parts of the ' Philosophical Transactions,' 

 which would render comj^lete the volumes of that work presented to 

 the Royal Microscopical Society by the President, and to which refer- 

 ence was made in the current number of the Journal. 



Mr. Slack moved, and it was unanimously carried, " That the 

 thanks of the Society be given to the Royal Society for the parts 

 of the ' Transactions ' which had been so generously i^resented." 



The President said, the presentation of those parts now made the 

 volumes in the possession of the Society complete from 1751 to the 

 jn-esent time. They were therefore greatly indebted to the Royal So- 

 ciety for their contribution. He would just mention that the Council 

 had come to the conclusion to have the parts bound into volumes ; and 

 that the volumes might be borrowed for the space of one month, on 

 condition that the Fellows submitted to a fine of Is. per day for default 

 in returning them. It was necessary that regularity should be observed 

 on this head, and probably the penalty of incurring the fine would 

 ensure such regularity. He thought that such volumes could only be 

 studied satisfactorily by the Fellows at their own homes, and that with 

 this privilege of taking the volumes from the library before them, 

 many gentlemen would be glad to join the Society for the sake of 

 having free access to such a work. 



Mr. Ladd, F.R.A.S., of Beak Street, Regent Street, exhibited that 

 .evening a simple form of spectroscope and micro-sj^ectroscope com- 

 bined. The maker described it as a form of spectroscope contrived 

 by him in 1868. Its size, when closed, is 2 inches long and -^^ inch 

 diameter. It can be applied to the microscope very effectively in the 

 following way :-^-The tube containing the direct-vision prisms is 



* Secretaries of Societies will greatly oblige us by writing their reports legibly 

 — especially by printing the technical terms thus : H y d r a — and by " underlining " 

 words, such as specific names, which must be printed in italics. They will thus 

 secure accuracy and enhance the value of their proceedngs. — Ed. M. M. J. 



p 2 



