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The catalogues of scientific-instrument makers of our larger cities generally furnish a list of the requisite materials or handbooks which describe the use of the various microscopes of standard make. The author is indebted to Bergen's Elements of Botany for the following information concerning the different firms which deal in microscopes.
It told of deep-sea soundings and investigations into the creatures at the bottom of the sea, of Portuguese men-of-war, and albatrosses; and there were some orders to scientific-instrument makers for her to send to them a very improving letter, but a good deal like a book of travels.
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