76 



SCIENCE. 



[N. S. Vol. XV. No. 367. 



other destroying agent by those interested in 

 forests." In regard to the pasturing of sheep 

 in the public forests Mr. Kinney speaks very 

 plainly, denouncing the practice in strong 

 terms, as most destructive to the forests. The 

 book is illustrated with half-tone reproduc- 

 tions of striking photographs, which cannot 

 fail to arrest attention. While the literary 

 side of the book leaves something to be de- 

 sired, there is no question that it will do much 

 good, and the author is to be commended for 

 his effort. 



TITLES OF RECENT ARTICLES AND PAMPHLETS. 



Under the title 'Beitraege zurKenntniss der 

 Grasroste' Fritz Mueller discusses in 'Beihefte 

 zum Botanischen Centralblatt,' Band X., a 

 new species of Puccinia (P. syniphyti-'broino- 

 rum) related to Ericksson's P. dispersa, and 

 in the course of his paper gives the details of 

 many cultural experiments. The latter will 

 be of much interest to students of the 

 Uredineae who are engaged in similar work 

 —Dr. Th. Valeton, in the 'Bulletin de L'ln- 

 stitut Botanique de Buitenzorg' (VIII.), in 

 an article entitled 'Die Arten der Gattungen 

 Coffea 1j. jPeristomeris Thw.,und Lachnastoma 

 Korth., gives the results of a critical study of 

 these genera in the form of careful diagnosis, 

 followed by notes on certain species. Coffea 

 is divided into two subgenera, viz., Eucoffea 

 (which includes among others the well-known 

 C. arabica), and Paracoffea, containing six to 

 eight Asiatic and African species. — Robert 

 Hegler's paper, 'Untersuchungen ueber die 

 Organization der Phycoehromaceenzelle,' in 

 Pringsheim's ' Jahrbuecher' (Bd. XXXVI.), 

 is important as a contribution to our knowl- 

 edge of the structure of the cell of Proto- 

 pliytes. He distinguishes what he regards as 

 a genuine nucleus in every cell, and is able 

 to separate this from the cytoplasm. In each 

 he makes out a ground-mass in which is a 

 more deeply staining granular part. In divis- 

 ion he describes what appears to be a crude 

 imitation of the karyokinetic stages as seen 

 in higher plants, but his photographs do not 

 certainly sustain this statement. — In the last 

 number of Hedivigia (Bf. XL., Hft. 5) Georg 

 Bitter brings to a close his paper, 'Zur Mor- 



phologic und Systematic von Parmelia,' in 

 which he has discussed in particular the sub- 

 genus Hypogymiiia. — A notable paper in the 

 September Annals of Botany is Margaret C. 

 Ferguson's 'Development of the Egg, and 

 Fertilization in Pinus strohus' in which she 

 notes the similarity between fertilization in 

 the pines and processes known to take place 

 during fertilization in some animals. Three 

 plates of about ninety figures illustrate the 

 paper. — V. S. White's paper, 'The Tylosto- 

 maceae of North America,' in the August 

 Bulletin of the Torrey Botanical Club, is a 

 valuable contribution to our knowledge of 

 these curious puff-balls. The paper is illus- 

 trated with ten plates, including seventy-eight 

 figures.- — Dr. Walter Migula, the well-known 

 German botanist, has undertaken to bring- 

 out a new 'Kryptogamen Flora' of Germany, 

 which is to constitute the fifth, sixth and 

 seventh volumes of Thome's 'Flora von 

 Deutschland, CEsterreich und der Schweiz.' 

 The first Lieferung takes up the Bryophyta. A 

 feature of the work is to be the use of colored 

 plates for illustrating the text, and the ex- 

 amples given in the first number indicate that 

 this part of the work is to be well done. — 

 Numbers 209 and 210 of Engler and Prantl's 

 'Pfianzenfamilien' are devoted to the Selagi- 

 nellaceae, and the fossil members of this 

 family and of the Lyeopodiaceae, and in addi- 

 tion, the Lepidodendraceae. — The sixth 'Heft' 

 of Engler's ' Pflanzenreich ' has appeared, and 

 we may now judge of the magnitude and im- 

 portance of the work which Engler has under- 

 taken. These six Heften have treated of the 

 families Musaceae, Typhaceae, Sparganiaceae, 

 Pandanaceae, Monimiaceae, Eafflesiaceae, 

 Hydnoraceae, and Symplocaceae, and to these 

 about four hundred and fifty pages have been 

 given. The illustrations and text maintain 

 the high standard of the earlier numbers. 



SUPPLEMENT TO NICHOLSON'S DICTIONARY 

 OF GARDENING. 



Botanists and horticulturists will find much 

 of value in the two volmnes which constitute 

 the supplement to this well-known work. In 

 747 pages the editor has succeeded in adding 

 a great amount of new and supplemental mat- 



