Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 171
bjectof which a general view hasbeen obtained by means of alower; or to use the lowerfor the purpose of finding aminute object (such as a par-ticular Diatom in the midstof a slide-full) which we wishto submit to high amplifica-tion. This is effected by theNose-piece of Mr. C. Brooke,,which, being… … I FINDEKS. 117 -original form, the arm was straight; so that the Objective not in usewas often brought down npon the Stage, unless the relative lengthsof the two objectives were specially adjusted. This inconvenience is:avoided, however, in the construction adopted by Messrs. Powelliand Lealand,…
Microscopy · Biology
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