NOTICES TO CORRESPONDENTS.
All communications for the Editor should be addressed to No. 192, Piccadilly, W. To avoid disappointment, contributions should be received on or before the 15th of each month. No notice can be taken of anonymous communications. All notes, queries, or articles for insertion, must be guaranteed by the name and address of the writer, which may be withheld from publication if so desired.
The Acquavivarium, Fresh and Marine.—The new Edition of the above work has been somewhat delayed by the desire of the publisher to present it in a more useful shape than any work hitherto published. It will consist of different departments, by various writers, each especially "up" in his own subject; and in addition to the usual information about Fresh-water and Marine Aquaria, there will be separate chapters devoted to the Cultivation of Minute Plants and Animals for Microscopic purposes; and on Out-door Aquaria, Ponds, and Ornamental Waters. As the Editor would like the information to be as complete as possible, he would be glad to receive any bids or suggestions from readers of Science Gossip who possess special knowledge on the latter subjects. Address the Publisher, 192, Piccadilly.
E. M.—The price of "British Reptiles" will be six shillings, coloured plates.
Port St. Julian Earth.—F. W. desires a little of this diatomaceous earth, in exchange for other objects.—Address, No. 1, New Road East, London.
T. S.—We take no note of queries unless the initials of the inquierer are attached. See pp. 43, 144, &c.
