32 



inent and Structure ff'om Seaweed to Clematis, and a Manual 

 of Plants, includmg all the Known Orders with their repre- 

 sentative Genera, — Annie Chambers-Ketch um. (Small 8vo., 

 pp, 190 and 192, Philadelphia, 1889.) 



The plan of this new book follows the Jussieuian method, be- 

 ginning with the consideration of the most lowly plants and leading 

 up to that of the Anthophyta. The terminology adopted for the 

 lower groups is antique. We were not prepared to see the names 

 Thallogens and Acrogens — the latter here including both the 



moss tribe and the fern alliance— used again, and can but regret 



that they have been employed by Mrs. Chambers-Ketchum. 

 The book is thoroughly illustrated, many of the cuts being taken 

 from original drawings. There are chapters on the past history 

 of plants, on plant chemistry, on the several systems of classifi- 

 cation, and on nomenclature and pronunciation The tables of 

 what are called Etymons, giving both the derivations of common 

 words and those of proper names, are very useful. The '* Manual 

 of Plants " composing the second part of the book, contains an 

 immense amount of information In a very small space. 

 Chekan. {Eugenia Chequen, MoL) H. H. Rusby. (Druggists' 



Bulletin, Nov., 1888. with cut. Reprinted.) 

 Compositor in Medicijie. — H. H. Rusby. (Pharm. Rec, Dec. I, 



1888. Reprinted.) 



A brief consideration of the chief medicinal species, compiled 

 with special reference to the want of uniformity which exists in 

 the constituents and properties of this natural order. 

 Cork-wings on certain trees, — Development of. — Emily L. Greg- 



ory. (Bot Gazette, xiii., 249-258, 281-287, 312-317; two 



plates.) 



Diaiomaceous formations of Virginia in connection with some re- 

 cent discoveries made in the excavation of the Eighth Street 

 tunnel at Richmond. — C. L. Peticolas. (The Microscope, viii.r 

 327-330. 



A description of the location and extent of these world-re- 

 nowned deposits, with some conclusions regarding their geologi- 

 cal position. As might be expected, the paper is one of consid- 

 erable interest, for the author has enjoyed special adv^antages for 

 the study of these formations. C. H, K. 



