988 THE AMERICAN NATURALIST. | [Vor. XXXIV. 
With fascicle 124, issued in April, Part III of Vol. XIII of the 
Flora Brasiliensis is brought to a conclusion, with title-page and 
index. The volume includes the natural families Polygalacez, 
Turneracez, Caricacee, Loasacee, and Sapindacez. 
The third part of a series of papers on Mexican materia medica, 
by a number of students, has recently been issued by the /ystituto 
Médico Nacional, of the City of Mexico. 
In Publication No. 50 of the Field Columbian Museum, Dr. Mills- 
paugh publishes a reconsideration of the Cyperacez and of Cakile as 
treated in his earlier paper on the Antillean cruise of Mr. Armour's 
yacht Utowana, in the West Indian and Central American region. 
A catalogue of plants collected by Don José Blain on the Isle of 
Pines, Cuba, is published by Dr. Millspaugh as Publication No. 48 
of the Field Columbian Museum. 
The synonymy of several North American species of Eryngium is 
reviewed by Britten and Baker in a recent number of the Journal of 
Botany. 
Part III of Mrs. Brandegee’s * Notes on Cactez " is published in 
Zoe for July. 
Von Seemen describes two Colorado willows, supposed to be new, 
in Heft 2 of Vol. XXIX of Engler’s Botanische Jahrbiicher. 
Hydastylus, a genus proposed in 1812 by Dryander and Salisbury 
for the plant which has commonly been known as Sisyrinchium Cali- 
fornicum, is revived by Bicknell in the Buletin of the Torrey Botanical 
Club for July, and is now made to include twelve species, all of 
Mexico or the Pacific United States. 
Recent numbers of the Acta Horti Petropolitani are largely occu- 
pied by papers on Orchidacez, by Klinge. 
Exoascus deformans, and the means of controlling the leaf-curl of 
the peach due to it, form the subject of an extensive bulletin by 
Newton B. Pierce, recently published by the United States Depart- 
ment of Agriculture. 
Variation among pathogenic bacteria, a fruitful subject for 
study, is considered by Dr. Theobald Smith in a paper recently 
reprinted from the Journal of the Boston Society of Medical Sciences. 
From the seeming fact that new disease germs are not constantly 
