...Simple lenses or dissecting microscopes... 
Worrallo Whitney 「A Guide for the Study of Animals」
...Simple lenses andcompound microscopes...
Worrallo Whitney 「A Guide for the Study of Animals」
...Simple orcompound microscopes, forceps, and a bristle...
Worrallo Whitney 「A Guide for the Study of Animals」
...Living birds, as perhaps pigeons, or mounted or stuffedskins, separate feathers, portions of feathers, microscopes...
Worrallo Whitney 「A Guide for the Study of Animals」
...Cheap microscopes have usually only one eye-piece,those of a better class have two, and the best are furnishedwith three, or even more...
Henry J. Slack 「Marvels of Pond-life」
...Most microscopes are furnished with a revolvingdiaphragm, with three holes, of different sizes, todiminish the quantity of light that is admitted to theobject...
Henry J. Slack 「Marvels of Pond-life」
...This is a habit easily acquired, and is onefor which our natural microscopes are exceedinglygrateful; and every judicious observer desires to keepon the best terms with his eyes...
Henry J. Slack 「Marvels of Pond-life」
...These eggs, as far as the microscopes can tell, differ in no respect from the others, the older ones...
J. Henri Fabre 「Bramble-bees and Others」
...However carefully we examine it with our finest chemicalreagents and most powerful microscopes, we can find no definite parts or noanatomic structure in it...
Ernst Haeckel 「The Evolution of Man」
...For reading thedelicately engraved marks and figures on the silver, microscopes arenecessary...
Robert Stawell Ball 「The Story of the Heavens」
...The eyepiecesusually furnished with telescopes are, in theiressential principles, compound microscopes, and they areof two descriptions, "positive" and "negative...
Garrett Serviss 「Pleasures of the telescope」
...Bring telescopes and microscopes, use all strategy, for that atomis difficult to catch...
Henry Warren 「Recreations in Astronomy」
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