82 THE MICROSCOPICAL NEWS. 
stratum—washing the pencil after each operation in distilled water. 
The frustules are then boiled as above, and a single washing 
removes all trace of salt. After calcining at a red heat the 
specimens are mounted dry in the usual way.—Bwll. Soc. Belge 
Microscopie. 
NOTES AND QUERIES. 
As we wish to relieve ourselves of all purely 
business transactions in connection with the Journal, 
subscribers are kindly requested to pay the amount 
of their subscriptions to Messrs. Tubbs, Brook, and 
Chrystal, 11, Market-street, Manchester, to whom also 
all applications for advertisements should be made. 
ALL matter intended for publication must be sent before the 12th 
of each month to the Editor, Mr. George E. Davis, The 
Willows, Fallowfield, Manchester. 
ERRATA.—In our last number for A/feration of Generations read 
Alternation. 
CoLe’s Strupies.—Mr. Cole writes us as follows :—“I am very 
scrupulous about even the appearance of taking credit for any 
work I have not done myself, and therefore write (in addition to 
my thanks) to ask you to be so kind as to say in your next number 
that the ‘‘ Poppy ” essay and the Botanical Section of the Studies, 
Vol. II., is written by David Houston, F.L.S., and the Animal 
Histological Section by Mr. Fearnley ; the drawings having been 
made by Mr. E. T. Draper.” 
AYLWARD’s PoND-COLLECTING APPARATUS.—We have received 
from Mr. Aylward a very cheap and effective pond-collecting 
apparatus which certainly should be in the hands of every collector. 
It consists of a pond-strainer, a net-ring, a small case of corked 
tubes, a weed-knife, and a bottle-holder. The method used for 
attaching the various portions of the apparatus to any ordinary 
walking stick or umbrella is very ingenious and simple, and we 
feel sure will be largely adopted. The apparatus needs only to 
be seen to be appreciated by all practical naturalists. 
Mr. Bo.ton’s Portro.io.—No. to of this important collection 
of drawings is before us, and we are pleased to find that two of 
the animals figured therein are new to science—Chilomonas spiralis 
and Asplanchna Ebbeshornii. We are not aware that there is any 
records of Raphidiophrys elegans having been found in England 
before, or that Hemidinium nasutum has been previously figured. 
