8 EXPLANATIONS OF THE PLATES. PLATE XII. TRANSVERSE SECTIONS OF EXOGENOUS STEMS (Original). PLATE XIII. TRANSVERSE AND VERTICAL SECTIONS OF EXOGENOUS STEMS (Original). PLATE XIV. SEXUAL REPRODUCTION OF INFUSORIA (after Balbiani). PLATE XV. VARIOUS FORMS OF FORAMINIFERA (Original). PLATE XVI. VARIOUS FORMS OF FORAMINIFERA (Original). PLATE XVII. STRUCTURE OF EOZOON CANADENSE (Original). PLATE XVIII. VARIOUS FORMS OF POLYCYSTINA (after Ehrenberg). PLATE XIX. VARIOUS FORMS OF RADIOLARIA (after Haeckel). PLATE XX. CAMPANULARIA GELATINOSA (after Van Beneden). PLATE XXI. PENTACRINOID LARVA OF ANTEDON (Original). PLATE XXII. STRUCTURE OF LAGUNCULA REPENS (after Van Beneden). PLATE XXIII. STRUCTURE AND DEVELOPMENT OF TOMOPTERIS ONISCIFORMIS (Original). PLATE XXIV. CIRCULATION IN THE TADPOLE (after Whitney). PLATE XXV. DISTRIBUTION OF CAPILLARY BLOODVESSELS, AS SHOWN IN TRANSPARENT INJECTIONS (Original). 18. Nachet's Stereoscopic Binocular. 19. Wenham's Prism for Stereoscopic Binocular. 20. Sectional view of Wenham's Stereoscopic Binocular. 21. Exterior view of Wenham's Stereoscopic Binocular. 22. Arrangement of Prisms in Nachet's Stereo-Pseudoscopic Binocular. 23. Exterior of Nachet's Stereo-Pseudoscopic Binocular. 24. Diagram illustrating Angle of Aperture suitable for Binocular 27. Gairdner's Doublet Microscope. 28. Field's Simple Microscope. 29. Quekett's Dissecting Microscope. 30. Beck's Dissecting Microscope, with Nachet's Binocular Magnifier. 31. Field's Educational Microscope. 32. Crouch's Educational Microscope. 33. Pillischer's Student's Microscope. 34. Murray and Heath's Student's Microscope. 35. Smith and Beck's Student's Microscope. 36. Ladd's Student's Microscope. 37. Nachet's Student's Microscope. 38. Crouch's Student's Binocular. 39. Collins's Harley Binocular. 40. Beale's Demonstrating Microscope. 41. Baker's Travelling Microscope. 42. Dr. Lawrence Smith's Inverted Microscope. 43. Diagram of Reversing Prism of ditto. C 44. Nachet's Double-bodied Microscope. 45. Arrangement of Prism, &c., in Powell and Lealand's Binocular for high powers. 46. Draw-tube with Erector. 47. Diagram of Nachet's Erecting Prism. 48. Nachet's Erecting Eye-piece. 49. Sorby-Browning Spectroscope Eye-piece. 54. Diagram of Chevalier's Camera Lucida. 55. Diagram of Nachet's Camera Lucida. 56. Brooke's Nose-piece, modified by Powell and Lealand. 57. Collins's Graduating Diaphragm. 58. Ross's Achromatic Condenser. 59. Smith and Beck's ditto. 60. Powell and Lealand's ditto. 61. Webster Condenser, fitted with Collins's Graduating Diaphragm. 62. Amici's Prism. 63. Parabolic Illuminator. 64. Diagram of action of ditto. 65. White-cloud Illuminator. 66. Fitting of Polarizing Prism. 67. Fitting of Analyzing Prism. 70. Bull's-eye Condenser. 71. Beck's Parabolic Speculum. 72. Crouch's Adapter for ditto. 73. Diagram of Lieberkühn. 74. Beck's Vertical Illuminator. 75. Stage-Forceps. 76. Beck's Disk-holder. 77. Morris's Object-holder. 78. Aquatic Box. 79. Zoophyte-Trough. 80. Compressorium. 81. Ross's Compressorium. 82. Dipping Tubes. 83. Glass Syringe. 84. Forceps. 85. Bockett-Lamp. 86. Section of Adjusting Objective. 87. Arrangement of Microscope for Transparent Objects. 88. Effect of different modes of Illumination on Pleurosigma formosum, after Beck. 89. Arrangement of Microscope for Opaque Objects. 90. Hexagonal Areolation of Pleurosigma angulatum, after Wenham. 91. Valve of Surirella gemma, after Hartnack. 92. Spring-Seissors. 93. Curved Scissors. 94. Valentin's Knife. 95. Section-Instrument. 96. Lever of Contact. LIST OF WOOD-CUT ILLUSTRATIONS. 97. Spring-Clip. 98. Wooden Slide for Opaque Objects. 99. Smith's Mounting Instrument. 100. Slider-Forceps. 101. Spring-Press. 102. Dropping-Bottle. 103. Shadbolt's Turn-Table. 104. Sunk Cells. 105. Plate-Glass Cells. 106. Tube-Cells. 107. Built-up Cells. 108. Volvox globator, after Ehrenberg. 109. Formation of Amoeboid bodies in Volvox, after Hicks. 110. Various species of Staurastrum, after Ralfs. 111. Circulation in Closterium, after S. G. Osborne. 112. Binary Subdivision of Micrasterias, after Lobb. 113. Conjugation of Cosmarium, after Ralfs. 114. Ditto of Closterium, after Ralfs. 11 115. Binary Subdivision and Conjugation of Didymoprium, after Ralfs. 116. Development of Pediastrum granulatum, after Braun. 117. Various forms of Pediastrum, after Ralfs. 118. Portion of Isthmia nervosa, after Smith. 119. Triceratium favus, after Smith. 120. Pleurosigma quadratum, after R. Beck. 121. Biddulphia pulchella, after Smith. 122. Conjugation of Epithemia, after Thwaites. 123. Conjugation of Melosira, after Thwaites. 124. Meridion circulare, after Smith. 125. Bacillaria paradoxa, after Smith. 126. Licmophora flabellata, after Smith. 127. Diatoma vulgare, after Smith. 128. Grammatophora serpentina, after Smith. 129. Surirella constricta, after Smith. 130. Campylodiscus costatus, after Smith. 131. Melosira subflexilis, after Smith. 132. Melosira varians, after Smith. 133. Actinoptychus undulatus, after Smith. 134. Isthmia nervosa, after Smith. 135. Chatoceros Wighamii, after T. West. 138. Achnanthes longipes, after Smith. 139. Gomphonema geminatum, after Smith. 140. Separate frustules of ditto, after Smith. 141. Schizonema Grevillii, after Smith. 142. Mastogloia Smithii, after Smith. 143. Mastogloia lanceolata, after Smith. 144. Fossil Diatomacea, from Oran, after Ehrenberg. 145. Fossil Diatomacea, from Mourne mountains, after Ehrenberg. 146. Hæmatococcus sanguineus, after Hassall. 147. Successive stages of development of Ulva, after Kützing. 148. Zoospores of Ulva, after Thuret. 149. Oscillatoria contexta, after D'Alquen. 150. Nostoc, after Hassall. 151. Generation of Vaucheria, after Pringsheim. 152. Zoospores of Achlya, after Unger. 153. Cell-multiplication of Conferva, after Mohl. 154. Sexual Reproduction of Edogonium ciliatum, after Pringsheim. 155. Zygnema quininum, after Kützing. 156. Chatophora elegans, after Thuret. 157. Batrachospermum moniliforme. 158. Nitella flexilis, after Slack. 159. Antheridia of Chara, after Thuret. 160. Mesogloia vermicularis, after Payer. 161. Sphacelaria cirrhosa (original), with antheridium of S. tribuloides, after Pringsheim. 162. Receptacle of Fucus, after Thuret. 163. Antheridia and Antherozoids of Fucus, after Thuret. 164. Tetraspores of Carpocaulon, after Kützing. 165. Torula cerevisiæ, after Mandl. 166. Sarcina ventriculi, after Robin. 167. Botrytis bassiana, after Robin. 168. Enterobryus spiralis, after Leidy. 169. Structure of Enterobryus, after Leidy. 170. Fungoid Vegetation from Passulus, after Leidy. 171. Shell of Anomia penetrated by Parasitic Fungus. 172. Stysanus caput-medusa, after Payer. 173. Puccinia graminis. 174. Acidium tussilaginis, after Payer. 175. Clavaria crispula, after Payer. 176. Fructification of Marchantia, after Payer. 177. Stomata of Marchantia, after Mirbel. 178. Conceptacles of Marchantia, after Mirbel. 179. Archegonia of Marchantia, after Payer. 180. Elater and Spores of Marchantia, after Payer. 181. Portion of Leaf of Sphagnum. 182. Structure of Mosses, after Jussieu. 183. Antheridia and antherozoids of Polytrichum, after Thuret. 184. Mouth of Capsule of Funaria. 185. Peristome of Fontinalis, after Payer. |