CONTENTS. XXXV 



PAGE 



Selenka's (E.) Electric Projection-Lamp for Microscopic Purposes {Fig. 240) Part 6 1015 



'LiEKGb's, (W.) Lantern Microscope ». 1019 



Newton's Electric Polarizing Projection-Microscope „ 1021 



IjESKke's, (3.) Lens-holder {Fig. 2il) » 1^21 



TiTS'SMV&'s Microscope u 1022 



Swift's Platinized Microscope » 1069 



(2) Eye-pieces and Otojectives- 



Nelson, E. M. — Finding the general character of the Components of a Cemented 



Combination Lens Part 1 151 



Feazeb's (A.) Centering Nose-piece for use with Double Nose-pieces {Fig. 43) . . „ 294 



Tv^B.^S^B,^}-L^u'?, {3. W. ) Lmproved Sliding Nose-piece and Adapter {Fig. ^) .. .. „ 295 



Wales's (W.) Cover-carrier for Immersion and Dry Lenses „ 296 



GrAGB, S. H. — Paper for Cleaning the Lenses of Objectives and Oculars .. . . „ 296 



Nelson, E. M. — Opera-glasses » 296 



Ewell, M. D. — Apochromatio Objectives Part 3 462 



Westien, H. — Double Objectives with a common field of view „ 462 



"New Glycerin Immersion Microscopic Objective'' Part 4 645 



Zeiss's Objective-changer, with slide and centering adjustment {Figs. 165 and 166) „ 646 



Hopkins, Gr. M. — Diminishing the Power of an Objective >> 6^:7 



Nelson, E. M. — New Eye-piece VAxt 6 928 



Gage, S. H. — Thickness of cover-glass for which unadjustable objectives are 



corrected ■>■> 1022 



Koss, W. A. — New Optical Substance for Objectives of Microscopes, ^c „ 1023 



(3) Illuminating- and other Apparatus- 



ScHEODEE, H. — Ahrens's Polarizing Prism Part 1 152 



Debes, E. — Super-stage for the Selection and Arrangement of Diatoms {Figs. 



19-21) » 153 



Hildebeand's (H. E.) -SMe-carner (I'iV/s. 22-24) „ 151 



Quimbt's (B. T.) ^/ic?e-carrjer 5> 1^1 



Jones's (W. S.) Radial Swinging Tail-piece {Fig. 45) Part 2 297 



Steickee's Electric Lamp v 297 



Haswell's (W. a.) Eotating. Stage and Circular Slides for large Series of 



Sections {Figs. 46 and 47) » 297 



Waum and Cold "Stages" {Figs. 4:8-81) „ 299 



Meeian's (A.) Arrangement for Heating Minerals {Fig. 82) „ 318 



Chabey, L. — Capillary Tube Slide and Perforator of Cell-elements „ 319 



liTLGmL's{K.) Opaque Illuminator {Fig. \Q2) Part 3 462 



'i^KGB.^'r's {K.) Dark-ground Illuminator {Fig. WS) •■, 463 



Qgimby's{B. F.) Lamp-shade ,> ^63 



Hetjeck's (H. 'Y as) Comparator {Figs. \Q^ and 105) •• ,-, '463 



YmsALS^W.) Hot Stage with Direct Pegulator {Figs. lOQ and 107) .... „ 464 



JxjhiE's's {A. A.) Immersion Heating Apparatus » ^^^ 



Klein, W. — Unequal Heating of Crystal Sections « 467 



Lipez, F. — Culture Glass for examining Micro-organisms {Figs. 108 and 109) .. „ 468 

 Schieefeedeckee's (P.) Apparatus for Marking Microscopical Objects {Fig. 



110) „ 468 



Beeteand, E. — Microscopic Measurement of Indices of Eefraction and Axial 



Angle of Minerals „ 468 



Beeteand's (E.) iJe/raciomeier (i^jgr. Ill) „ 469 



Henocque — HxmMtoscopy {Figs. 112-115) )» 470 



YI&yem!?, {Gr.) Chromometer {Fig. IIQ) ,, 472 



Keoustchoff, K. de — Spectrum Analysis in Micro- Mineralogy {Fig. 117) .. „ 472 



Tbcestee, 0. — Contrivance for use with the Microscope by lamplight .. .. „ 473 



c 2 



