CORRESPONDENCE. 157 



The Hon. Secretary will doubtless be pleased to supply any 

 additional particulars on application. We wish the new venture 

 every success. 



BIBLIOTHECA MICROGRAPHICA. 



A Bibliography of the Microscope and Micrographic Studies, being 

 a catalogue of Books and Papers in the library of M. Julien 

 Deby, F.R.M.S., etc. (D. Bogue, London). 



The volume before us, which, though part 3 of the series, has 

 been published before parts i and 2, is devoted to the literature 

 of the DiatoviacecB. It was compiled with the co-operation of 

 Mr. F. Kitton, F.R.M.S., and treats the whole subject of the 

 Diato77iacece in a thoroughly exhaustive manner, and will doubt- 

 less be found of great value as an aid in assisting the student to 

 various works of reference on the subject. 



Mr. Marlow, of Constitution Hill, Birmingham, has sent us a 

 parcel of Ground-Edged Glass Slips, of various descriptions and 

 of superior quality. For opaque mounts, there are plain opal, and 

 coloured slips. Those who use sunk cells will find the clear, 

 transparent cell in the opal slide to have a very pretty effect. Two 

 very efficient and cheap zoophyte troughs, and an assortment of 

 round and square tin rings of various thicknesses were also sent. 



Correeponbence. 



The Editors do not hold themselves responsible for the opinions or 

 statements of their Correspondents. 



To the Editor of " The /ourfial of the Postal Microscopical Society." 

 Sir,— 



I was very greatly interested by the paper in your second 

 number, by Mr. A. Hammond, on " Stylaria paludosa," as I have, 

 for some time, had a number of these interesting worms in one of 

 my aquaria. Not being very " well up " in the recent literature on 

 the subject, I was not aware that their multipHcation by fission 

 was doubted. I am pleased to say that I have been fortunate 



M 



