NOTES AND QUERIES. 47 
I part of Calvert’s crystallized carbolic acid in 100 parts of water, and 
dilute one part of this with ten parts of water when required for 
use. It may be used in almost any kind of cell. 
CLEANING DIATOMS.—I should be glad of the information how 
to obtain diatoms perfectly free from earth and other impurities. I 
have frequently succeeded in cleansing them; but have almost 
always failed in separating them from the muddy and siliceous 
particles by which they are generally surrounded.—Arthur /. 
Doherty. 
THE Fairy SHRimp.—On Dec. 21st in last year, Mr. Blatch 
exhibited at a meeting of the Birmingham Natural History Society 
a dead specimen of the above, which is, with one exception, the 
largest of the British Entomostraca. Since then I have visited 
Knowle, and collected six specimens of “the fairy shrimps,’”— 
Chirocephalus diaphanus—one of which isa male. ‘Two of these I 
send to different Societies for exhibition, and two are looking well 
in my aquarium, and I hope to be able to breed them, as the 
female is carrying a large bag of eggs.—Zhomas Bolton. 
INSPECTOR OF SALMON FISHERIES.—Professor Huxley has been 
appointed to the post of Inspector of Salmon Fisheries, rendered 
vacant by the death of Mr. Frank Buckland. The salary is £700 
per annum. In accepting this, Professor Huxley resigns his ap- 
pointment as naturalist to the Geological Survey. 
FREE LiBRARIES.—To the student of Microscopy these institu- 
tions are invaluable. Private libraries of any extent are very 
expensive matters, and can only be formed by those who have 
space as well as means at their command. 
If the student requires a book, not to be found upon the shelves 
of the Free Library of his town, he should bring the matter before 
the Council of his Society (if he belongs to one) with the request 
that they should propose the same for purchase to the Free 
Libraries Committee. If the book be a dona-fide standard work 
of reference, the Committee will scarcely refuse to purchase it, 
unless it be in those towns where Punch, Fun, and the Illustrated 
London News form the principal works of reference. 
Huddersfield has lately declined to adopt the Free Libraries Act. 
Out of fifteen thousand burgesses only 3,000 voted, and of these 
2,425 were against its adoption. 
