ON ATMOSPHERIC WAVES. 35 
187. Solanum. 199. Ligusticum. 
: 188. Verbascum. 200. CEnanthe. 
_ 50, TEREBINTHACE. . 201. Pastinaca. 
4 189. Ailantus. 202. Petroselinum, 
51. TRoPMOLACER. 203. Sium. 
190. Tropzolum. 204, Smyrnium. 
52. UMBELLACER, 53. URTICACER. 
191. /Ethusa. 905. Cannabis. 
192. Angelica. 54, VALERIANACER, 
193. Bupleurum. 206. Valeriana. 
194. Carum. 55. VERBENACER. 
195. Conium, 207. Hebenstreitia. 
196. Daucus. 208. Verbena. 
197. Foeniculum. 56. VIOLACEX. 
198. Heracleum. 209. Viola. 
_ Contributions of additional seeds addressed to W. H. Baxter, Botanic Garden, 
Oxford, will be attended to, and put up in the usual form for experiment.’ 
Oxford, August 2nd, 1848. 
Fifth Report on Atmospheric Waves. By W. R. Birt. 
In completing the series of Reports on Atmospheric Waves, a subject which 
has occupied my attention under the auspices of the Association during the 
ast five years, it will be desirable so to arrange the present report that those 
points may be prominently exhibited in which any progress has been made 
towards the illustration of the desiderata mentioned in my report of 1846, 
ages 162 to 164. These desiderata have reference to the general subject 
under two aspects,—that relative to the individual waves, contemplating them 
either as atmospheric waves, properly so called, or as a certain arrangement 
of aérial currents giving rise to, and intimately connected with, certain baro- 
Metric phenomena, the details of which will be found in the same report, 
page 132 to 162; and that relative to the effects either of these waves or 
murrents as exhibited in certain barometric phenomena, known more parti- 
ularly as the ‘symmetrical curve of November,” or of other barometric 
surves possessing certain features which may be distinctly recognized at dif- 
ferent stations and traced over extensive tracts of the earth’s surface. ‘The 
object of the present report will consequently be not so much to carry on the 
investigation (the course pursued in former years) as to concentrate our pre- 
sent knowledge of the subject, and to indicate still more distinctly the blank 
that yet remains to be filled in order to complete our inquiries into these in- 
teresting atmospheric movements. 
_ These objects will probably be best attained by bringing together, in the 
rst place, all the information we possess relative to the individual waves, 
lose already determined and placed on record in our former reports, and 
lose which may have been brought to light since, either from an extended 
ssion of the observations in our possession at the last meeting of the As- 
tion, or from others received during the period that has elapsed since 
at meeting to the present time; secondly, by determining, so far as the 
servations in our possession will enable us to do, the barometric type for 
ember, especially the period of the symmetrical curve, as illustrative of 
Dz 
