INDEX TO JOURNAL. 



291 



Pediastrum, 217. 

 Penium Cyllndrus, 92. 

 Pfltiger, E. On a New Reagent for 

 the exhibition of the Axis Cylinders 

 in Nerves, 273. 

 I'll 'it m nits hirtellus, 41. 

 Pitmularia, Ehr., 11 G. 

 Pleurodynia, Sm., 117. 



„ ai/f/ulatum, 26. 



„ bailie um, 25. 



„ fasciola, 48. 



„ Makron, C. Johnst., ] 5, 



18. 



„ Par&erii, 105. 



,, sfrigositm, 18. 



Podosira, Ehr., 121. 

 Portumnus depurator, 41, 42, 44. 

 Polarizing Stage, Smith, J., on a, 203. 

 Polvthalamia, Vegetable Parasites in, 



176. 

 Polyzoa, T. Hincks, Description of 

 New, from Ireland, 275. 

 „ collected bv J. Yate Johnson, 

 Esq., at Madeira, "Catalogue of, 280. 

 „ Shetland, 213. 

 „ New species of, collected in 

 Shetland, by G. Barlee, 123, 143. 

 Pouchet, M. "On Atmospheric Micro- 

 graphy, 130. 



„ On Atmospheric Corpus- 



cles in the Respiratory Organs of 

 Animals, 259. 



„ On the means by which 



all the Corpuscles normally invisible, 

 contained in a determinate volume 

 of air, may be collected into an in- 

 finitely small space, 188. 

 Prism, erecting, M.Nachet on an, 206. 

 Protozoa, Notice of Prof. Greene's 

 Manual of the Sub-Kingdom, 192. 

 Pustulopora orcadensis, Bk., 214. 

 Pythium entophytum, 231. 



R. 

 Rainey, Geo. On the structure and 

 mode of formation of Starch-gra- 

 nules, 1. 

 Registration of Objects, G. L. Wal- 



lich on the, 136. 

 Rhabdonema, Kvitz., 121. 

 Rhipidophora, Kiitz., 119. 

 Richardson, B. Wills. On a Blue In- 

 jecting Fluid, 271 . 

 S. 

 Saccharo-Polariscope, W. Hendrv on 

 a, 24S. 



Salicornaria Jo/iuso/ii,Bk.. } 2S0. 



Sarcina, and especially on its occur- 

 rence in the Urine, H. Welckcr 

 on, 163. 



Schizonema, Agardh, 122. 



Scorpion, T. H. Huxley on the struc- 

 ture of the Mouth and Pharynx of 

 the, 250. 



Screw, universal, R. Beckon the, 103. 



Scruparia diaphana, Bk., 281. 



Scrupocellaria Macandrei, Bk., 281. 

 ,, Maderensis, Bk.,2S0. 



Seaweeds, Nature-printed, by W. G. 

 Johnstone and A. Croall, notice of, 

 193. 



Smith, James. On a Collecting Bottle, 

 204. 



„ Description of au Ob- 



ject Cabinet, 2 j\. 



„ On a Polarizing Stage, 



203. 



Sollitt, J. D. On the measurement of 

 the striae of Diatoms, 48. 



Spatangidum Ralfsianum, Grev., 16, 

 28. 



Sponges, Vegetable Parasites in, 173, 

 187. 



Stand, microscopic, and mountingappa- 

 ratus, 155. 



Starch-granules, Rainey, G., on the 

 structure and mode of formation 

 of, 1. 



Staurastrum deject urn, S6. 



„ Description of two new 



species, by W. Archer, 75. 



nilidum, W. A., 78. 

 „ oayacaiitha, W. A., 77. 



Stauroneis, Ehr., 117. 



„ angulata, C Johns., 13, 18. 



Stephanogonia polygona, Ehr., 96, 



Slriatella, Agardh, 121. 



Surirella, Turp., 113. 



Synedm, Ehr., US. 



T. 



Tabellaria, Ehr., 121. 



Taylor, Robt. On a Diatom-finder, 



62. 

 Tetmemorus Bre'bissonii, 87. 

 Tetrachastrum, Dixon, 81. 



„ mucronatum, Dixon, 82, 



„ oscitans, Dixon (sp), 



83. 



„ pinmtlifidum, Dixon 



(sp.), S3. 



