CORRESPONDENCE. 55 



To the Editor of " The Journal of the Postal Microscopical Society.''^ 



Sir,— 



Perhaps some of our members can offer suggestions as to a 

 Microscope suitable for class demonstrations. I want to meet 

 with a really useful, portable instrument, which can be passed 

 round to individual students during class instruction. The 

 arrangement must admit of the perfect safety of the slide, and 

 also allow the object to be fully illuminated. The instrument 

 referred to by Dr. L. Beale in his work on the Microscope, is, 

 from what I can gather, of a costly nature ; what I require is an 

 instrument of reasonable cost. 



Wm. Narramore, 



Liverpool. 



[Our correspondent will find an instrument described on page 52, 

 that may probably meet his requirements. — Ed.'\ 



To the Editor of " The Journal of the Postal Microscopical Society y 

 Sir,— 



I should like to suggest that in an early number of this 

 Journal a short description of " How to take a Photograph of 

 Minute Organisms " be given. Many a subscriber who is not able 

 to give a correct drawing might be able to furnish a Photograph. 

 The description should be as short and clear as possible. 



Yours truly, 



J. Smith. 

 [Other correspondents have made a similar request. — Ed^ 



A correspondent writes to us, asking for information as to the 

 " best and simplest mode of separating such minute objects as 

 Spicules of Gorgonia and Sponge, Plates of Holothuriae, Starch- 

 granules, etc., from the dirt and debris with which they are always 

 mixed up, and obtaining them in a clean state, ready for mounting." 

 He cannot find the process explained in any of the ordinary text- 

 books, and attempts made to solve the difficulty have hitherto 

 ended in failure. — Ed. 



