44 THE NORTHERN MICROSCOPIST. 
and hopefully in the cause of science may be encouraged thereto, let me assure 
you, in the too little-known words of the poet statesman of America, (James 
Russell Lowell,) that—” 
‘* No power can die that ever wrought for truth ; 
Thereby a law of nature it became, 
To live, unwithered, in a sinewey youth 
When he who called it forth is but a name.” 
NOTES AND QUERIES. 
CLOUDINEsS oF SLipEs.—In reply to S. A. G., the following 
extract from the Journal of the Quekett Club may help him out of 
his dilemma.—Piz/o, 
Read 23rd Feb., 1866, by Mr. D. E. Goddard. “A fruitful 
“source of annoyance is the appearance of a white cloudiness which 
“spoils many carefully mounted specimens. ‘This may arise from 
“two sources. Dampness of the specimen, or the presence of 
“grease or fatty matter that has not been carefully removed before 
“applying the balsam. 
“Tf a section of any sponge, such as may often be found on our 
“‘sea-coast, be mounted months after it has been gathered, this 
“cloudiness will ensue, because it has not been thoroughly dried. 
“To avoid such mishaps I employ one of three methods. 
““t. Heat, sometimes direct, but more generally by means of a 
“water bath. 
_ “2, By digesting the structure in strong alcohol before placing 
“it in camphine, 
“3, By using a sulphuric acid bath, which consists of a large jar 
“containing a smaller one partly filled with the strong acid. Chlo- 
“ride of calcium would answer the same purpose. 
“The object is placed on a slip of glass over the vessel contain- 
“ing the drying agent, and the whole rendered comparatively air 
“tight by a disc of glass. This plan I think most generally useful.” 
H.M.S. CHALLENGER.—The first volume of the Report describ- 
ing the scientific results of the voyage of H.M.S. Challenger 
is published. It contains a provisional introduction to the Zoolo- 
gical section, by Sir C. Wyville Thomson, and six memoirs, namely, 
on Brachiapoda, Pennatulida, Ostracoda, the bones of Cetacea, the 
Development of the Green Turtle, and the Shore Fishes. Each 
memoir can be had separately, the prices ranging from 2s. to 15s. 
The entire volume is published at 37s. 6d. 
Livinc OrGANIsMs.—Since the publication of our last number, 
we have received several interesting specimens from Mr. Bolton’s 
studio. The ovum of the large American trout, Sa/mo fontinalis ; 
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