xxx vm 
CONTENTS. 
PAGE 
Gaertner, F. — The Grapho-Prism and its Use (Figs. 29 and 30) 
Bernard, H. — A new Mechanical Stage (Figs. 31 and 32) 
Stratton’s Illumimtor (Fig. 48) 
Delage, Yves — Some new Improvements applied to the mechanical part of 
the Microscope (Figs. 49-51) 
Karop, G. C. — A new Fine-adjustment for the Substage (Figs. 52 and 53) 
Piffard, Henry G. — The Camera Obscura v. the Camera Lucida .. .. 
Czapski, S. — Use of Polarization- Photometer (Figs. 60 and 61) 
Morton, F. L. — A Revolving Table 
Vescovi, P. de — A simple Geometrical Indicator for the Microscope 
(Fig. 62) 
Bibliography 
Nelson, E. M . — A New Spherometer (Fig. 73) 
Ewell, M. D . — Standard Glass and Speculum Metal Centimetres 
Taylor, T. — Revolving Stage for Viewing Microscopic Sections, §c. (Fig. 94) 
Fuess, R . — Heating Apparatus for Crystallographic Optical Work (Fig. 
95-97) 
Buckton, G. B. — The Reflector with the Projection Microscope 
Nelson, E. M. — Packman the original Inventor of the Reflecting Paraboloid 
Part 2 264 
„ 267 
Part 3 416 
„ 417 
421 
„ 422 
Part 4 548 
„ 549 
„ 550 
„ 550 
Part 5 670 
Part 6 861 
862 
863 
867 
911 
(4) Photomicrography. 
Neuhaus, R . — Photomicrography Part 1 108 
Pringle, A . — Photomicrography Part 2 269 
Francotte, P . — Focusing in Photomicrography „ 270 
Van Heurck’s Vertical Camera for Photomicrography (Fig. 33) .. .. „ 271 
Mercer, A. C . — On a Series of Lantern Slides: Photomicrographs and 
Photographs of Photomicrographic Apparatus Part 3 305 
Neuhaus’ (R.) Text-book of Photomicrography „ 423 
Castellarnau, D. Joaquin Ma. de — Photomicrography of the Solar 
Spectrum and Absorption Spectra (Fig. 54) „ 424 
Vereker, J. G. P . — Photomicrography of Podura-scales .. ,, 425 
Muras, T. H . — A simple Apparatus for Photomicrography (Fig. 55) .. .. „ 426 
Giltay, E . — On the Use of the Camera Lucida in Drawing Bacteria 443 
Osmond, W. M . — Photomicrographic Camera ,, 444 
Roscoe, H. E., & J. Lunt — Photographing Bacteria (Fig. 63) Part 4 551 
Martens — Photomicrographical Apparatus Part 5 673 
His, W . — Photomicrographical Apparatus of the Leipzig Anatomical School 
(Figs. 74 and 75) .. .. ,, 673 
Marktanner-Tcrneretscher, G. — Use of Photography in Natural Science „ 677 
Piffard— Processes of Photomicrography Part 6 868 
Nachet Photomicrographic Apparatus (Figs. 98 and 99) „ 870 
Tolman, H. L . — Microscopical Illustrations „ 873 
Piffard, H. G . — Drawing Photomicrographic Objects „ 874 
The Microscope and a Hair „ 875 
Piffard, H. G . — Photomicrography „ 906 
Gill, C. H . — Photomicrographs demonstrating the Markings of Diatoms .. „ 911 
(5) Microscopical Optics and Manipulation. 
Nelson, E. M . — Further Notes on the Monochromatic Illuminating Ap- 
paratus Part 1 1 
Thompson, Silv anus P. — The Measurement 'f Lenses (Figs. 8-20) .. .. „ 109 
