INDEX TO TRANSACTIONS. 
in 
Smith, James. On a Section, and a 
Mounting Instrument, 1. 
Smith, Hamilton, L. Notes on Dia- 
tomacese found near Gambia, Ohio, 
33. 
Spatmigidium, Breb., 44. 
Stauroneis^ 33, 158. 
Stigmatophora^ n. gen., Wall., 43. 
„ lanceolata,^dSS..^^Z. 
„ rostrafa, Wall., 43. 
Surirella, Turpin, 64. 
Syndendrium^ Ehr., ].68. 
Synedra, Ehr., 160. 
„ DoUolus^ Wall., 48 . 
T. 
Tabellaria, Ehr., 165. 
Toxonidea, Doukin, 160. 
Triceratium, Ehr., 63, 147. 
„ ardicum, Brightwell. E. 
C. S. Roper on, 55, 58. 
„ Bleakleyii, Sm., 150. 
Brightwellii, T. W., 149. 
„ castellatum, Breb., 147. 
„ condecorum, 58. 
„ coniferum, Breb., 148. 
„ formosmit Hass., 149. 
„ iniricatum^ T. W., 148. 
„ marginatum, Breb., 148. 
„ Monterey ii, 58. 
„ Parmula^ Breb., 147. 
Triceratium pundatum, Wall., 48. 
„ Ralfsii, Smith, 150. 
„ striolatum, 58. 
„ trisulcum, Bail., 148. 
„ variabile, Breb., 149. 
„ venosum, Breb., 147, 148. 
„ TFilkesii, 58. 
Tryblionella, Smith, 65. 
V. 
Folvox globator. J. B. Hicks on the 
Amseboid conditions of, 99. 
W. 
Wallich, G. C. On the development 
and structure of the Diatom-valve, 
129. 
„ On the Siliceous or- 
ganisms found in the Digestive ca- 
vities of the Sal'pce^ and on their 
relation to the Elint nodules of the 
Chalk formation, 36. 
Wenham, E. H. On an Improved 
Binocular Microscope, 154. 
West, Tuffen. Remarks on some new 
or imperfectly described Diatoma- 
cese, and on a new Desmid, 147. 
X. 
Xanthidia, 49. 
Xanthidmm, Wall., 55. 
PRINTED BY J. E. ADLARD, BARTHOLOMEW CLOSE. 
