220 
for the concluding brochure of his “ Monograph of the Grasses of 
the United States” was so near completion that it can be edited 
according to its author’s plan. 
Dr. Vasey’s principal publications are too well known to re- 
quire comment here, but we cannot omit a reference to the 
greatest and most lasting monument to his memory, the National 
Herbarium. To building up this great collection he devoted his 
most faithful energies, and the future student of American botany 
will give him well deserved honor for this bounteous legacy. 
FREDERICK VERNON COVILLE. 
Reviews of Foreign Literature. 
Les Maladies Cryptogamiques des Cereales. Par J. Loverdo, 
Paris, 1892. This work of 300 pages and 35 figures, treats of the 
fungi parasitic upon wheat, rye, maize, barley, oats, sorghum, 
millet, rice and buckwheat, and under each species, the enemy, in 
the order of history, exterior characters, botanical aspect, condi- 
tion of development, effect of the disease, and means of defense. 
Under bacteria, Bacillus Sorghi, Burl., is treated at length with 
figures after Kellerman. The Ustilaginee are largely considered 
on pages 40 to 145, ten of the Ustz/agos proper receiving treatment, 
three Ziletias and Urocystis occulta. The chapter upon the penetra- 
tion of the ustilago germ is an interesting review of the modern 
view established by DeBary, Brefeld and others with its important 
economic bearings. Less space is given to the Uredinee than the 
smuts, only Puccinia graminis, P. rubigo-vera, P. coronata, P. 
Sorght and P. purpurea being given in particular. The figures are 
not of the best, those after DeBary and Cavara being much better 
than those d’apres nature. The Ascomycetes brought to the 
front are Erysiphe graminis, Spherella exitralis, and, of course, 
the Ergot (Claviceps purpurea), over thirty pages being given to 
this with several of Tulasne’s cuts. A few pages are devoted to 
the imperfect forms of Helminthosporiums and Septorias. The 
practical vegetable pathologist can find in this work much to in- 
terest him at very small expense. B. DOH, 
On the Genus Myeloxylon, Brong. A. C Seward. (Ann. Bot. 
vii. 1-20, Pl. 1, 2.) The author gives the results obtained from a 3 
