LINNEAN SOCIETY OF LONDON. 45 



brought out by M. Eenault of Paris. The first two vols, are 

 supposed to serve as handbooks for the first and second year of 

 the study ; the third vol., which is in preparation, will treat of 

 the Ferns. One point to be deprecated in this book is its entire 

 neglect of some good vs^ork done in this country, passing over 

 it without the slightest allusion. Prof. Engler, of Kiel, has 

 lately issued Part 2 of his ' Versuch einer Entwickelungs- 

 geschichte der Pflanzenwelt ; ' but I regret to notice some care- 

 lessness in printing, one page in particular offers upwards of 

 twenty misspellings. In Prance M. Zeiller has devoted nearly 

 200 pages to an exposition of the Carboniferous Plora of France ; 

 and the Comte de Saporta has issued another instalment of his 

 ' Paleontologie francaise.' Dr. Oswald Heer has brought out a 

 contribution to the Fossil Flora of Portugal ; and our country- 

 man Mr. Shrubsole has written an account of the Diatomace83 

 found in the London Clay, with a list of the species by Mr. 

 Kitton of Norwich. Prof. Newberry gives, in the ' Bulletin of 

 the Torrey Botanical Club,' the Geological History of the North- 

 American Flora ; and Prof Lesquereux has brought out two 

 volumes on the Coal Flora of Pennsylvania, with an accompanying- 

 atlas. 



Of the more important productions purporting to be derived 

 from various Botanic Grardens, I may mention Herr Treub's 

 'Annales du jardin botanique de Buitenzorg,' namely, the first 

 part of the second volume ; the first volume of an intended 

 annual series of Prof. Eichler's on the Berlin Garden ; and the 

 completion of vol. i. of Signer Todaro's ' Hortus botanicus Panor- 

 mitauus ' in folio, with coloured plates ; these, however, are 

 coarsely executed. 



I have a much longer list of works on morphological and phy- 

 siological botany. Besides the current abstracts which appear 

 from time to time in our scientific serials, I am bound to men- 

 tion Grassmaun's work on "Vegetable Physiology, Detmer's on 

 the same subject, and Pfeffer's also, the last author devoting the 

 first volume of 383 pages, the only one published as yet, to the 

 consideration of Stqffwechsel. The last year has also witnessed 

 the publication of continuations of Cohn's ' Beitrage,' Sachs's 

 record of work at Wiirzburg, and Priugsheim's researches into 

 the nature of Chlorophyll, the latest add.ition, and certainly one 

 of the most iuiportant on the subject. On a more restricted 

 scale. Von Hohuel on some secretionary organs of plants ; a 

 memoir by Jancewski, in Polish, on comparative experiments on 

 the sieve-tubes ; Karl Noerner on the development of the em- 

 bryo in Grasses ; and a criticism (and further experiments) on 

 Mr. Darwin's book ' The Power of Movement in Plants,' by 

 Prof. Julius Wiesner of Vienna. This brings us to a group of 

 papers of one of our own Fellows, Mr. Francis Darwin, on the 

 power possessed by leaves of turning themselves at right angles 

 to incident light. 



