Science-gossip . in spite of incidentaldrawbacks due to alteration of focus of the sub-stage condenser. The. remarks on the respectiveadvantages of the long and short tubes are muchto the point, as is the comment on the absurdlyshort tube-length for which some Continentalobjectives are corrected. We observe that M. Nelsons new stepped rack and pinionreceives notice, and that Messrs. Swift & Son aregiven due credit for the introduction of the nowuniversally adopted diagonal rack and remarks as to fine adjustments are muchmodified, and the excellence of one type in par-ticular r
Science-gossip . in spite of incidentaldrawbacks due to alteration of focus of the sub-stage condenser. The. remarks on the respectiveadvantages of the long and short tubes are muchto the point, as is the comment on the absurdlyshort tube-length for which some Continentalobjectives are corrected. We observe that M. Nelsons new stepped rack and pinionreceives notice, and that Messrs. Swift & Son aregiven due credit for the introduction of the nowuniversally adopted diagonal rack and remarks as to fine adjustments are muchmodified, and the excellence of one type in par-ticular receives full and generous recognition. Infact, the comparison of various types of fine adjust-ment is most carefully considered, and few com-petent workers would be inclined to disagi-ee withthe conclusions drawn. The review of stages andmechanical stages is much extended, and thenotices of the stands of various makers entirely SCIENCE-GOSSIP. BAUSCH & LOMBS LABORATORY, BACTERIOLOGICALADVANCED MODEL POPULAR FAVOURITE. With Screw Substage, Iris Dia-phragm, Coarse and Fine Adjust-ment, Brass Stand, in PolishedWood Cabinet, with Lock andKey, £5 0 0, HUYGHENIAN EYEPIECES. 2-in. ij-in. i-in. J-in. Jin. 5/- 5/- 5/- 5/- 5/-B. & SPECIALLY COR-RECTED HIGH-CLASS OB-JECTIVES for Laboratory 2/3 in. o24, 15/- ea. ,, .. 1/6 in. ,, 0-82, 30/- „Oil Immersion— 1/12 in. ,, i32, 100/- ,, Our 1/6 in. o66 speciallyconstructed for Blood Correcting. We have all Models on Stockcomplete with Objectives, &c.,38/6 to £30 each. A. E. STALEY & CO., 35 AliDERMANBURY, LONDON, (BAUSCH & LOMES REPRESENTATIVES FOR GREATBRITAIN AND EXPORT.) Zi,-PAGE FULLY ILLUSTRATED DESCRIPTIVELIST THREEPENCE TO COVER POSTAGE. IJ^T As an Instance of tha High class character of oufStands and Perfection of our Objectives, we maysay we have now sold over 30,000 of these Micro-scopes; this fact In Itself Is sufficient guarantee oftheir merit and quality. —See Not
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
