536 
Strickland, H. E., on the true method of 
discovering the natural system in bo- 
tany and zoology, 184; commentary 
on Mr. G. R, Gray’s ‘ Genera of Birds,’ 
410. 
Sweeting, R. H., on a female Rorqual 
Whale which was stranded at Char- 
mouth, 72, 301. 
Sylvia, on a species new to Britain, 155. 
Syngnathus, new species of, 310. 
Synonyms, multiplication of, 411. 
Tanysiptera, remarks on a supposed new 
species of, 237. 
Taylor, W., notice on the Bokhara clover, 
297. 
Terraces, natural, 346. 
Thoa Beanii, occurrence of, in Dublin 
Bay, 167. 
Thompson, W., catalogue of the land and 
freshwater Mollusca of Ireland, 16, 
109, 194; on British Char, 439. 
Thyone, characters of the new genus, 97. 
Tijdschrift voor Natuurlijke Geschiedenis, 
noticed, 219. 
Tissue, vegetable, cellular formation of, 
from amorphous cambium, 330. 
Torpedo emarginata, description of, 407. 
Trachinus Vipera, on the stinging pro- 
perty of, 161. 
Trachyderes, on a new species of, 479. 
Trees, growth of, Dr. Becks on, 335; Van 
Hall on, 336; Agardh on, 336; fossil, 
386. 
Tringa minuta, notice respecting, 236. 
Trionyx A.gyptiacus, 517. 
Trochilus, new species of, 151. 
Tuberacearum Monographia, noticed, 146. 
Tubulipora verrucaria, occurrence of, 171. 
Tweedside Society, 381. 
Typhlopone, observations on the genus, 81. 
Unio, on the byssus of, 77. 
Vasa scalariformia, 333. 
Vaucheria, M. Unger on, 344. 
Vegetable Physiology, report on,136, 269, 
330. 
INDEX. 
Vittadinis, C., Monographia Tuberacea- 
rum, noticed, 146. 
Viverride, on some genera of, 78. 
Wagner, R., on the generative system of 
some of the lower animals, 70. 
Waterhouse, G. R., on some recently pro- 
posed genera of Viverride, 78; on a 
new spccies of Rodent, 220; descrip- 
tions of Carabideous insects, collected 
by Mr. Darwin, 254; on a new species 
of Squirrel, 304; on Carabideous in- 
sects, 351. 
Weever-fish, lesser, stinging properties of 
the, 161. 
Wernerian Natural History Society, 521. 
Westwood, J. O., on the genus Typhlo- 
pone, with descriptions of several ex- 
otic genera of ants, 81; on a new spe- 
cies of Cerapterus, 297; on the genus © 
Derbe, 477 ; on trap-door Spiders, 479; 
on the Death-watch, 480. 
Wheat, on the vegetation of, in different 
sctle, 136. 
Willshire, Dr. W. H., on che nature of 
some of the ldwer organized beings, 
148. 
Wood, S. V., catalogue of shells from the 
Crag, 243; on the fossils of the Crag, 
343. 
Wood, fossil, on the structure of, 312. 
Woody substances, chemical composition 
of, 140. 
Wydler, M., on the formation of the em- 
bryo in Scrophularia, 426. 
Zcé, the first state of Pagurus, 92. 
Zoo-geological considerations on the 
freshwater Mollusca, 241. 
Zoological notices, 89. 
Zoological Society, proceedings of, 68, 
150, 219, 301, 507. 
Zoological travellers, information respect- 
ing, 468. 
Zoophytes, Irish, catalogue of, 166. 
Zunck, Dr., on the natural system of 
plants, 376. 
END OF THE SIXTH VOLUME. 
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