LIST OF ILLUSTRATIONS. 



Portrait of Dr. Wm. C. Krauss (frautispiece) , 1 



New Tube tor the Culture of Anaerobiotic Micro-organisms (1 figure). ... 8 



New Species from Barbadoes (1 figure) 25 



Infusoria for Icientificatiou (1 figure) 26 



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



Cicada Septeudecioi its Mouth 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 (frontisijiece) 74 



New Genus from Barbadoes (1 figure) 97 



New Species from Barbadoes (Ifigure) 98 



Method of improving Cheap Microscopes (1 figure) 101 



Tranverse S<^ction of Squash (Cucurbita) Vine (frontispiece) lly 



New Way of Marking Objectives (1 figure) 1.^7 



New Genus from Barbadoes (1 figure) 138 



Novel Microscope and. Mechanical vStage (4 figures) 145 



Senega root, Cross Sections and Structure of Triosleum perfoliatum 



(frontispiece) 153 



Nature and Manufacture ot Bacterial Products (3 figures) 156 



Two New Species (rom'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 XTrethral Pus (1 figure) 197 



Colony of Staphylococcus pyogenes aureus floating on liquified Gelatin 199 



Giant-cell sarcoma (1 figure) 201 



Klebs-Loeffler bacillus (Ifigure) 203 



Typhoid bacillus (1 figure) 205 



Influenza bacillus (1 figure) 211 



New microscope (1 figure) 217 



Portrait of iirthur 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 



Cystiu (10 figures) : 297 



New Species of Tenia (2 figures) .* 306 



Crystals from " Vaseline-Cocaine " (1 figure) 308 



San Jose Scale (frontispiece, 1 figure) 324 



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



Photo-micrographic Apparatus (frontispiece) 367 



Portrait of E. W. Claypole, M. D. (frontispiece) 407 



