CONTENTS. XXXIU 



PAGE 



Dyck, F. C. Van — Binocular Dissecting Microscope Part 2 275 



IjEITz's large Dissecting Micfvscope (Fig. il') ,, 275 



Dick and Swift's Patent Petrological Microscope (Fig- 57) Part 3 432 



Konkolt's (N. v.) Microscope for observing the Lines in Photographed 



Spectra (Fig. 5S) „ 436 



,, ,, Microscope for Beading the Knorre-Fuess Declinograph 



(Fig. 59) , 437 



IjmTz's No. 1 Stajid (Fig. 60) „ 438 



Adams's large Projection and Compound Microscope (Plate IX.) „ 438 



Chaeles I. if jcroscqpe (i^«V/s. 61-64) „ 440 



" Due DE Chaulnes' " ilfjcroscope (i^j^'. 65) „ 442 



Thompson, S. P. — Note on Polarizing Apparatus for the Microscope 



(Figs.7l-13) Part 5 617 



Binocular Microscopes (Ahrens, GoUzsch, and Holmes) (Figs. 74-77) .. ,, 685 

 Blix's (M.) Microscopes for measuring the radii of the curved surfaces of the 



eye (Figs. 78-81) „ 688 



Ross's (Andrew) Screw and Pinion Coarse- and Fine-Adjustment (Figs. 82 



andSS) „ 691 



M^Ij^TOsn's (h. D.) Microscope-Attachment (Figs. 8i-87) „ 692 



Ol^iy Italian Microscope (Fig. 88) „ 695 



Anderson's (E. J.) " Panoramic Arrangement for the Microscope " (Fig. 97) Part 6 799 



T^E-LSOi^-CvRTElS Microscope (Large Model) (Fig. 98) „ 800 



'EvmBV'RGB. Students' Microscope (Figs. 99 and 100) „ 802 



IjEAcm's (W.) Improved Lantern Microscope (Figs. 101-103) „ 803 



(2) Eye-pieces and Objectives. 



Jackson, H. — Monobromide of Naphthaline as an Immersion Medium.. .. Part 1 119 



1/10 in. Apochromatic Objective of N. A. 1' 63 Part 6 805 



(3) Illuminating: and other Apparatus. 



Thoma's (B,.) Camera Lucida (Figs. 10 and 11) Parti 119 



Pantocsek, J. — Finder (Fig. 12) „ 121 



AvivsTABhE Safety-st'jge (Fig. 13) „ 121 



'E^G'EhM.A'S'N's (T. W.) Microspectrometer (Figs. 14:-16) „ 122 



Powell & Lealand's Apochromatic Condenser (Fig. 17) „ 125 



Koch & Max WoLz's iamp (%. 18) ,, 126 



Bausch & Lome Optical Co.'s Adjustable Hemispherical Illuminator 



(Fig.^9) „ 126 



Aureus' (G. D.) Modification of Delezenne's Polarizer ., ; .. Part 2 276 



Fa-lteu's(G., & Son) Botating Object-holder (Fig. 4:2) ,, 276 



Lattermann, G. — Apparatus for tneasuring very minute Crystals (Fig. 43) „ 277 



Ward, R. H. — Rogers' Eye-piece Micrometer (Fig. 66) Part 3 443 



EwELL, M. D. — Glass versus Metal Micrometers , „ 445 



„ „ Micrometer Measurements .- „ 447 



KhAATSCn's (Bl.) Radial Micrometer (Fig. 67) „ 447 



Krysinski's (S.) Eye-piece Micrometer and its uses in Microscopical Crystal- 

 lography .= „ 448 



1ayi.o^& (3.) Oleomargariscope (Figs. 89 and 90) Part 5 696 



Heueck, H. tan — Recent Improvements in Electric Lighting applied to 



Micrography and Photomicrography (Fig. 91) .. .. ., .. .. „ 696 



(4) Photomicrog'rapliy. 



Kibbler's (A.) Photomicrographic Camera (Fig. 20) Parti 127 



M.A'VfSO'N & Swa'n's Photomicrographic Apparatus (Fig. 21) „ 128 



JioBmsoTi's (J. & Sotas) Photomicrographic Cameras (Figs. 22 and 23) ., „ 128 



1889. C 



