334 



No. Diam. No. 



44. Exnvia or Cast Skin of Cer 

 cop-sis on leaf 



45. Scale of Perch 



46. Sponge Spicules 

 47. 



>» 



>> 



48. Winged Parasite of Indian 



Bat ... 



49. Section of Chalcedony 



50. ,, ,, Lapageria rosea 



51. Diatoms on Coralline 



Most of the above objects were 

 taken as illuminated by Spot 

 Lens or by Reflected Light 

 (opaque objects), except Nos. 

 38, 39, 40, and 45, these being 

 taken by Polarized Light. 



The following, to end of 

 list, were taken by Trans- 

 mitted Light. 



52. Flea (human) Male. 



53. ,, „ Female. 



54. „ of Cat 



55. „ „ Wild Rabbit. 



56. Parasite of Ox. 



57. ,, ,, Elephant. 



58. Ovipositor of Saw-Fly. 



59. Foot of House-Fly. 



60. Proboscis Blow-Fly (portion 

 of) 



61. Palpi of Spider 



65. Trachea of Silkworm 



17 66. Pro-log of Moth-larva 

 14 67. Cirrhi of Barnacle ... 

 81 68. Spiracle of Dytiscus 

 40 69. Eye of ditto 



70. Pygidium of Flea ... 



18 71. Leiosoma Palmacinctum ... 

 14 72. Glyciphagus phimiger 



18 73. Maple aphis... 



17 74. Nycteribia — small ... 



75. ,, of Indian Bat... 



76. Abdominal fringe of Nycte- 

 ribia... 



77. Parasite of Vampire Bat ... 



78. Mange Insect of Horse ... 



79. Foot of Parasite of Queen 

 Bee, Br aula caca... 



80. Section of Sugar Cane 



81. ,, „ Ovary of Poppy 



82. „ „ „ of Tiger 

 Lily ... ... ... ... 



83. Diatoms. 



84. Arachnoidiscus ornatus on 

 Coralline (opaque object)... 



85. Triceratium favus ... 



Diam. 

 .. 34 



.. 24 

 .. 14 



86. „ quadratum 



87. ,, septangulatum 



88. Licmophora flabelleta 

 124 88. Anliscus cartatus 



25 90. Oephyria 



21 91. Pinnularia ... 



32 



1C0 

 248 

 60 

 147 

 63 

 13 

 14 



104 



28 



100 



164 



19 



13 



17 

 485 

 357 

 192 

 154 

 216 

 338 

 389 



62. Jaws of ditto 



63. Spinnerets of ditto... ... 135 92. Aulacodiscus margaritaceus 192 



64. Claws from small House- 93. Coscinodiscus radiosa ... 343 



Spider ... ... ... 240 94. Heliopelta metii ... ... 208 



At the close of the series Mr. Smith showed a variety of rustic scenes, 

 architectural subjects, machinery, &c, in order to show the suitability of 

 the process for other classes of subjects. 



The President said that after the hearty approval expressed during the 

 exhibition, it was hardly necessary to move a formal vote of thanks to the 

 exhibitors. He congratulated Mr. Evans on the excellent results he had 

 shown. The slides were a marked advance in that class of photographs, 

 especially those illuminated on a dark ground, and by reflected light. 

 He could not agree with Mr. Evans in thinking that these slides were, in 

 every case, superior to diagrams, because it was not only possible, but 

 necessary sometimes, to render details, for purposes of explanation, more 



