CONTENTS. XXIX 



MICROSCOPY. 

 A. Instruments, Accessories, etc. 



tl) stands. p^^g 



' Le Microscope," hij Vcui Heurch (First Edition) 251 



Spencer Lens Co.- — Mon-objeclive Binocular Microscope 628 



(S) Eye-pieces and Objectives. 



Nelson, E. M. — Metrical Measures 251 



Smith, T. — Notes on the Calculation of " Thin" Ohjectives 628 



Spencer Lens Co. — Demonstration OcuJar 629 



Smith, T. — Choice of GJass for Cemented Objectives 629 



(3) Illuminating' and other Apparatus. 



Nelson, E. M. — Lieherhuhns 16.^. 



Berget, A. — Differential Befractometer for Measuring Sea-ioater Salinity .. .. 251 



S. C. A. — Benzoline for Microscope Lamps 252 



TUKNER, C. E. — Sedgioich-Rafter Ocular Micrometer 339 



PoLiCARD, A., & B. Desplas — Polarized Light for Detecting Foreign .Bodies in 



Wounds 339 



Nelson, E.M. — Polar iscope ■. 340 



„ Biprism for the Greenough Microscope 421 



Bellingham & Stanley, Ltd. — Zeiss Abbe Berfactometer 421 



Evans, J. W. — Microscope Accessory 505 



Spencer Lens Co. — Delineascopes 629 



Cobb, N. A. — Dlumination for Distinguishing intra vitam Colour Beactions. 



(Figs. 1,2) .' 630 



(4) Photomicrography. 



Elliot, R. H. — Photography of Eye Specimens 252 



Lambert, F. C. — Exposure in Photomicrography 422 



Pigott, E. F. — Photographic Foucault-pendulum 631 



Smith, T. — Measuring the Foccd Length of a Photographic Lens 631 



(5) Microscopical Optics and Manipulation- 



Merlin. A. A. C. Eliot, & M. A. Ainslie — Nitzsehia singalensis as a Test-Object 



for the HigheM Powers 253 



Flatters & Garnott — Improved Immersion Oil 507 



Nelson, B. M. — Ortho4ereosco pic Image 507 



Smith, T. — Tracing Bays through an Optical System 631 



(6) Miscellaneous. 



Wallis, T. E. — Quantitative Microscopy .. .. 253 



Gage, S.U.—'' The Microscojye" 422 



Nelson, B. E. — Direct Microscopical Counting of Bacteria in Water 423 



MoELLER, W. — Vltra-microscopic Investigation of the Tanning Process in Jellies .. 632 



