Periodical Literature . ci 
Proceedings of the Cambridge Philosophical Society. Vol. VII. (Cam- 
bridge, 1890.) 
Part I. 
Potter : On the increase in thickness of the stem of the Cucurbitaceae. 
Part II. 
Seward : Notes on Lomatophloios macrolepidotus (Goldg.) 
Gardiner, W. : On the germination of Acacia sphaerocephala. 
Potter : Additional note on the thickening of the stem in Cucurbitaceae. 
Proceedings of the Cots wold Naturalists’ Field Club. Vol. X. Pt. 1. 
(Gloucester, 1890.) 
Wethered : On the occurrence of fossil forms of Chara in the middle 
Purbeck Strata of Lulworth, Dorset (with Plate). 
Proceedings of the Dorset Natural History and Antiquarian Field Club. 
(Dorchester, 1890.) Vol. XI. 
Bankes : Purbeck Wild Flowers in December. 
Proceedings of the Philosophical Society of Glasgow. Vol. XXI. (Glasgow, 
1890.) 
Lang : Cyanotype reproductions of Sea- weeds. 
Bower : On Club Mosses ; Past and Present. 
Proceedings of the Royal Irish Academy. Third Series. (Dublin, 1889-90.) 
Vol. I. 
No. 3. Lett : Report on the Mosses, Hepatics, and Lichens of the Mourne 
Mountain District. 
„ — Stewart : Report on the Botany of South Clare and the Shannon. 
Proceedings of the Royal Society. (London, 1890.) 
Vol. XLVII. 
No. 287. Lawes and Gilbert : New experiments on the question of the 
fixation of free Nitrogen. 
,, Acton : The assimilation of carbon by green plants from certain or- 
ganic compounds. 
„ 289. Williamson : On the Organisation of the fossil plants of the Coal- 
measures. Part XVII. 
,, Frankland, P. F. and G. C. : The Nitrifying process and its specific 
ferment. 
„ 290. Ward : The relation between host and parasite in certain Epidemic 
diseases of Plants. 
Vol. XLVIII. 
No. 292. Klein : A contribution to the Etiology of Diphtheria. 
,, Martin : The Chemical products of the Growth of Bacillus anthracis 
and their physiological action. 
„ Hankin : A Bacteria-killing Globulin. 
„ 294. Green : On the germination of the seed in the Castor oil Plant 
( Ricinus communis'). 
Proceedings of the Royal Society of Edinburgh. Vol. XVII. 
Smith : The absorption Spectra of certain Vegetable Colouring Matters. 
Griffiths : Researches on Micro-Organisms, See. 
Proceedings of the Yorkshire Geological and Polytechnic Society. New 
Series. (Halifax, 1890.) Vol. XI. Part 2. 
Hick and Cash : On the structure and affinities of Lepidodendron. 
