. The microscope and its revelations. FIG. 103 (1702i. FIG. 103A (1686). by means of the milled head B which is attached to a screw regulatingthe distance between the two plates, one of which carries the lens,the other the rotary object holder. The point worthy of note inthis instrument is the rotating wheel of graduated diaphragmsA, C, I), E, placed on the .^idc away from the lens. This is the firstinstance of a useful appliance surviving in our present Harriss Lexicon Technicum (1704, 2 vols. fol.). under theword microscope, Marshalls compound microscope (fig. 104) is describe
. The microscope and its revelations. FIG. 103 (1702i. FIG. 103A (1686). by means of the milled head B which is attached to a screw regulatingthe distance between the two plates, one of which carries the lens,the other the rotary object holder. The point worthy of note inthis instrument is the rotating wheel of graduated diaphragmsA, C, I), E, placed on the .^idc away from the lens. This is the firstinstance of a useful appliance surviving in our present Harriss Lexicon Technicum (1704, 2 vols. fol.). under theword microscope, Marshalls compound microscope (fig. 104) is described and figured. Several important innovations in micro- JOHN MARSHALLS tf:u urulfr y New Invented DOUBLEMICROSCOP For Viewing the CIRCULATION o Ma-Jc &. bv him a( (Kc Archimedes &sGoldiu Spcx-lacles in Lud«a(e Street. \v
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
