INDEX TO TRANSACTIONS. 
VOLUME XIII. 
A. 
Address of president of Microscopical 
Society, 19. 
Amphitetras nobilis, 105. 
„ parallela^ 104. 
Aidacodiscus gig as, 26. 
Auliscus Barhademis, 5. 
„ notatus, 5. 
Arachtioidiscus Grevilleunus, 47. 
Asterolampra eximia, 99. 
B. 
Beck, R., on a new form of live-trap 
and parabolic reflector, 113. 
Biddulphia corpulent a, 51. 
„ ? decor ata, 99. 
„ elegantula^ 50. 
„ jimbriata, 6. 
„ inflata, 50. 
„ nitida, 52. 
„ sinmita^ 49. 
J, spinosa, 6. 
„ tenuicornis^ 51. 
Brooke, C, annual address by, 19. 
Browning, J., on the application of 
the spectroscope to the micro- 
scope, 107. 
C. 
Cestodiscus Johnsoniarms, 48. 
Cladogrammn conicum, 97. 
Clavulacia Barbadensis, 24, 
Clip on a wire spring, by B. J. Mad- 
dox, 84. 
Cocconeis naviculoides, 34. 
Coschwdiscus Macraeanm, 46. 
„ Mossianus, 25. 
„ splendidus^ 44. 
Cressv)eUia Barbadensis, 3. 
„ cylindracea, 3. 
„ minuta, 4. 
„ Palmeriana, 2. 
„ sphoifica, 4. 
VOL. XIIT. 
D. 
Diatoms, new and rare, descriptions of, 
by B. K. GreviUe, Series XIV, 1. 
Series XV, 24. 
„ Series XVI, 43. 
Series XVII, 97. 
Dicladia Barbadensis^ 56. 
„ ? robusta, 98. 
E. 
Untogomia elegans, 33. 
G. 
Glass, iiotes on the fracture of polished 
surfaces of, by E. H. Wenham, 105. 
Goniothecium prolongatum^ 56. 
Greville, R. K., descriptions of new 
and rare diatoms, Series XIV, 1. 
„ Series XV, 24. 
„ Series XVI, 43. 
„ Series XVII, 97. 
II. 
Hall, W. H., on paraffin oils, their 
relative value to the niicroscopist, 
87. 
Heibergia Barbadensis, 100. 
Helix aspersa, 94. 
Hemiaulidce, 27. 
Hemiaulus alatus^ 31. 
angustus, 30. 
? ? capita tus, 54. 
crenatiis, 101. 
exigims, 29. 
hastatus, 31, 
lobatns, 29, 
lo7tgicornis, 31. 
lyriformis^ 30. 
mimiius, 101. 
nmcro7iatus, 28. 
ornithocephalus, 32. 
pulvinatus, 28. 
