( 6 ) 



PAGE 



Engelmann, Th. W. — Purple Bacteria and their relation to Li gilt ., .... ,. 105 



Belfanti & Pescakolo — Pathogenic Bacterium foundin Tetanu8 ,. 105 



SoROKiN, N. — Alnophaga pyriformia 1 06 



Lindner, P. — Sarcinx of Fermentation 106 



Fbaenkel, C, & R. Peeipfeb — Photomicrographic Atlas of Bacteriology ., .. 107 



Dennert, E., & A. WiGAND — Protoplasm considered as a Ferment Organism . . 107 



ScHULZ, H. — Yeast-poisona , .. .. 108 



MICEOSCOPy. 



«. Instruments, Accessories, &c. 



(1) Stands. 



Fasoldt's (C.) " Paienf" ilfzcTOScope (Figs. 1 and 2 ) 109 



CiKPSKis (_^.) Ear- (Tympanum) Microscope (Fig. ^) .. .. .. 112 



Moke Au's iifoK/ce?/ Microscope (Fig. 4) 113 



GrovgvCs Petrological Microscope .. ., .. .. 113 



Eeichert's (C.) PeirofogfJcaZ Mcroscope (Fig. 5) 113 



'Kvans,?,' (yi . G.) Patent Oxyhydrogen Microscope i¥\g. Q) 115 



„ „ Improved Microscopic Attachment— Cheap Form (F\g. 1) .. .. 116 



„ „ Special Combination Scientist Optical Lantern (Fig. 2>) .. .. 117 



Due DE Chaulnes' iHf /croscoj?e (Fig. 9) .. 118 



(2) Eye-pieces and Objectives. 



Jackson, H. — Mondbromide of Naphthaline as an Immersion Medium .. .. .. 119 



(3) Illuminating- and otlier Apparatus. 



Thoma's (R.) Camera XwctcJa (Figs. 10 and 11) 119 



Pantocsek, J.— Joinder (Fig. 12) ., .. .. ., 121 



AvjvsTA'BhE Safety-stage (Fig. 13) .. .. 121 



Engelmann's (T. W.) Microspectrometer (Figs, li-16) 122 



TovfEiih & TiEAJjA^d's Apochromatic Condenser (Fig. 17) 125 



Koch & Max WoLz's iam^ (Fig. 18) 126 



Bausch & LoMB Optical Co.'s Adjustable Hemispherical Illuminator (Fig. 19).. 126 



(4) Photomicrography. 



KiBBij^ii's Photomicrographic Camera (Fig. 20) 127 



MAVfsoTif & 8vf AT^'s Photomicrographic Apparatus (Fig. 21) 128 



Eobinsdn's P/iotomzcrogfrajjMc Cameras (Figs. 22 and 23) 128 



Eoux, E. — Photomicrography with Magnesium Light 129 



Makktannek's (G.) Instantaneous Photomicrogra2}hic Apparatus (Figs. 2i-26) .. 129 



Teambusti, A. — Easy Method for " Photographing " Sections 133 



Zettnow, E. — Chromo-copper Light-filter .. .. 133 



(5) Microscopical Optics and Manipulation. 



Maskell, W. M. — Optical Effect of Focusing up or down too much in the Microscope 134 



(6) Miscellaneous. 



Death o/ Dr. ^eiss .. •' ^^^ 



„ Mr. Zentmayer .. •• •• 1^5 



;8. Technique. 



(1) Collecting- Objects, including- Culture Processes. 



Kain, 0. H. — Collecting Diatoms 137 



JoDiN, v. — Culture of Unicellular Algm ,, .. ., 137 



C2) Preparing- Objects. 



Martinotti, 0. — Beaction of Elastic Fibres with Silver Nitrate .. ., .. .. 137 



Whitman, 0. O. — Solvent for the Gelatinous Envelope of Amphibian Egga .. .. 138 



Maurice, 0. — Method of Examining Fragaroides .. .. .. .. 138 



VoBWORN, M. — Preparing Fresh- water Br yozoa .. .. .. 138 



