LIST OF ILLUSTRATIONS. 



Portrait of Dr. Wiu. C- Krauss (frontispiece) 1 



New Tube for the Culture of Auaerobiotic Micro-organisms (1 figure). ... 8 



New Species from Barbadoes (1 figure) 25 



Infusoria lor Ideutitication (1 figure) 26 



Portrait of Prof. A. Cliffiird Mercer, M. D., F. K. M. S., (frontispiece)... 42 

 Cicada Septeudecim its >[outh Parts and Terminal Armor (5 figures)... 46 



New Species from Barbadoes (3 figures) 58,59, 60 



New Genus from Barbadoes (1 figure) 61 



Portrait of Robert B. Tolles 65 



Symbiosis, or, Partnerships in Plant-Life (fronti.spiece) 74 



New Genus from Barbadoes (1 figure) 97 



New Species from Barbadoes (Ifigure) 98 



Method of i mproving Cheap Microscopes ( 1 figure) 101 



Tranver.se S(;ction of Squash (Cucurbita) Vine (frontispiece) 113 



New Way of Marking Objectives (1 figure) 137 



New Genus from Barbadoes (1 figure) 13"^ 



Novel Microscope and Mechanical vStage (4 figures) 145 



Senega root, Cross Sections and Structure of Triosteum perfoliatum 



(frontispiece) 153 



Nature and Manufacture of Bacterial Products (."? figures) 156 



Two New Species from Bardadoes (2 figures) 161, 162 



New Genus from Barbadoes (1 figure). 163 



New Species from Barbadoes (1 figure) 164 



Cover-Glass Forceps (2 figures) 182 



Photomicrographic Apparatus Arranged for Use with Oil Light (frontis- 

 piece) 193 



Apparatus Arranged for Photomicrography with Acecylene Light(l figure) 195 



Gonococci in I'rethral Pus (1 figure) 197 



Colony of Staphylococcus pyogenes aureus floating on liquified Gelatin 



(1 figure) 199 



Giant-cell sarcoma (1 figure) 201 



KIeb.s-Loefrter bacillus (Ifigure) .., 203 



Typhoid bacillus (1 figure) 205 



Influenza bacillus (1 figure) 211 



New microscope (1 fij^ure) 217 



Portrait of Jirthur Mead Edwards, M. D. (frontispiece) 227 



New Species from Barbadoes (Ifigure) 241 



Bifurcated Double-ended Crystal from Asthmatic Sputum (1 figure) 242 



Portrait of Prof. Charles Wesley Smiley (frontispiece) 259 



Development of a free Swimming Medusa (11 figures) one in text 291, 293 



Cystin (10 figures) 297 



New Species of Tenia (2 figures) 306 



Crystals from " Vaseline-Cocaine " (1 figure) ^^^ 



San Jo.se Scale (frontispiece, 1 figure) 324 



San Jose Scale (7 other figures) 324, 325, 326, 327, 328, 329, 330 



Photo-micrographic Apparatus (frontispiece) 367 



