C 0 N T E N T S. 
Page. 
Contributions to the History of the Development of the Pyrenomy- 
cetes (Plate XIII), by Franz Von Tavel. 181 
Mycological Notes (Plate XIV), by George Massee... 184 
A Preliminary List of the Erysiphe.e of Montana, by F. W. Anderson.. 188 
Status of Sorghum Blight, by Kellerman & Swingle. Note by T, J. Burrill. 195 
Root Fungus of New Zealand, by R. Allan Wight... 199 
Some Notes upon Economic Peronospore/e for 1889 in New Jersey, by 
Dr. B. D. Halsted. 201 
Prevalence of Ergot in 1889, by Dr. Erwin F. Smith. 203 
An Experiment in the Treatment of Black-rot of the Grape, by B. T. 
Galloway. 204 
Erysiphe/e upon Phytoptus Distortions, by F. W. Anderson and F. D. 
Kelsey. 209 
Treatment of Apple-Scab, by B. T. Galloway and E. A. Southworth. 210 
Notes, by B. T. Galloway. ‘214 
Powdery Mildew of the Bean.—Rust of Flax.—Necessity for a rede¬ 
scription of the type species in Kew Herbarium.—New localities for 
Peronospora Cubensis, B. & C. 
Reviews of Recent Literature. 216 
Traitement du Mildiou (Georges Beucker). Ueber Rostpilz, deren Tel- 
eutosporen kurz nach ihrer Reife keimen (Dr. Paul Dietel). Pre¬ 
liminary Report on Smut in Oats (Kellerman & Swingle). Study of 
Montana Fungi (F. D. Kelsey). Traitement du Black-rot (A. de 
L’Ecluse). Boleti of the United States (Charles H. Peck). A New 
American Phytophtliora (Roland Tliaxter). Die Pilze des Aprikosen- 
baumes (Felix von Thiimen). TTne Mission Viticole en Amerique 
(P. Viala). Contributions a la Pathologic V6g6tale (J. H. Wakker). 
Traitement de la Maladie des Pommes de Terre, des Tomates et des 
Melons par les Sels de Cuivre (Ed. Zacharewicz). 
Explanation of Plates 
Index.. 
hi 
228 
229 
