782 PROCEEDINGS OF THE SOCIETY. 



to the Solar Microscope, it was clear that the reflected ray would move 

 m accordance with the apparent motion of the sun — did the observer 

 have to come outside the shutter to put it into position when required, 

 or had thi'y any kind of heliostat ? 



Mr. Rousselet said there was a screw arrangement connected with 

 the minor by which it could be moved so as to follow the sun. 



The thanks of the Society were voted to Mr. Baxter for his donation. 



Dr. Hebb said they had received a small piece of apparatus called 

 a Focusing Magnifier— sent by Taylor, Taylor, and Hobson, of Leicester, 

 for exhibition and inspection at the Meeting — a photographic auxiliary 

 which would no doubt be found useful to those who were interested in 

 photography. A description of this was read to the Meeting. 



Dr. Hebb also exhibited an elaborately constructed turntable, the 

 invention of Mr. Flatters and Mr. William Bailey, which was driven by 

 clockwork, and geared in such an ingenious manner that almost every 

 kind of motion could be obtained by it. It would describe a circle, an 

 ellipse, or even a square. The apparatus appeared to require consider- 

 able skill to use it, though no doubt anyone accustomed to the mechanism 

 of a lathe would be able to do so without much difficulty. 



A detailed description of the machine was read to the Meeting. 



The Chairman remarked that the instrument was a very ingenious 

 one, and it was interesting to have had the opportunity of seeing 

 it, but it was doubtful if anyone present would have occasion to mount 

 objects in such numbers as to need an apparatus of this elaborate 

 construction. 



The thanks of the Meeting were voted to Mr. Flatters for sending 

 this very beautiful piece of mechanism for exhibition. 



A Nernst Lamp, for use in enlarging photographs and also for use 

 with the Microscope, was sent for exhibition by Mr. R. W. Paul, who 

 was unfortunately unable to be present to give information as to its 

 advantages. 



Dr. Hebb said he had one of these in use in the Laboratory of 

 Westminster Hospital which answered very well, though personally he 

 did not like to use such a strong light, and had therefore handed it over 

 to his laboratory attendant. 



Mr. C. L. Curties said he exhibited a similar lamp at the Society's 

 Meeting some time ago, and supplied the one to which Dr. Hebb had 

 referred. 



The Chairman regretted that they had no paper to be read that 

 evening, but Mr. Watson Baker had arranged an exhibition of dissec- 

 tions of the Tsetse Fly, of Trypanosomes, and of a blood-sucking maggot, 

 which would be found of great interest. They were much indebted to 

 him for bringing them on that occasion. 



The thanks of the Society were voted to Mr. Watson Baker. 



