PHA3CEBOGAMIA. 365
Observations by Hr. Busolt on cracks in the bark and cam- bium-layer of the Lime, occasioned by exposure to the sun.
Caspabt, Bobt. — Flora des Kolner Doms. Bonn. Verhand. d. N. H. Y. I860, pp. 331-2.
A list of fifteen Phaneroganiia collected on a terrace of the unfinished south-west tower of Cologne Cathedral, at an eleva- tion of 177 feet, on two visits in Sept. 1857 and May, 1858. Of these Privet, Dog-Bose and Violet have probably been planted in soil carried up for them.
Cuaboisseatt, L'Abbe. — Observations sur douze especes de Ruins du Departement de la Yienne. Bull. Soc. Botan. Tom. vii. pp. 265-9.
Chapman, A. W. — Flora of the "Southern United States, containing an abridged description of the Flowering Plants and Ferns of Tennessee, N. and S. Carolina, Georgia, Alabama, Mississippi, and Florida. The Ferns by D. C. Eaton. 1 vol. Svo. New York, I860.
An Introduction includes a brief sketch of the Elements of Botany, a Glossary of Terms and an Analysis of the Natural Orders. Synopses of the genera are given in the larger Orders.
Chaten", A. — Orclre des Thesiacees ou Santalacees, Bapports de leur structure anatomique avec leur classification. C. Bend. Oct. 16, I860.
Choist, Pkof. — Du genre Discostigma (Hassk.) appartenant a la Famille des Clusiacees. Glen. Mem. xv. pp. 431-9. With 2 plates.
Founded on the plant distributed by Zollinger under No. 3276. A supposed second species of the genus figured (Zoll. No. 1192) is apparently Eubiaceous.
Cohn, F. — Ueber contractile u. irritable Gewebe d. Pflanzen. Virch. Arch. xxii. p. 405.
Coldsthea:m, W. — Experiments with Ana?sthetic Agents on Sensitive Plants. Trans. Bot. Soc. Edinb. vi. pp. 390-7.
A true anaesthesia was most decided in experiments on the irritable stamens of Herberts, exposed to the action of Chloro- form, Amylene, Sulphuric and Chloric Ether. Immediately after exposure to the vapour, the stamens sprung towards the pistil, returning slowly to their former position. They were then found to be destitute of irritability. Their irritable condition was usually restored by exposure to the sun.
Cosson, E. — Note sur le Gagea Bohemica. Bull. Soc. Botan. Tom. vii. pp. 212-13.
Near Nemours this species appears to multiply itself princi- pally by bulbils which detach from the bulbs of the parent plants ; the fertilization of the ovules being imperfect. M. Cosson is satisfied that Gr. saxatilis, Koch, and Gr. lohemica, Schult. are specifically identical.
Sur les hybrides de l'herbier de M. de Franqueville (obtenus
