42 
IOWA ACADEMY OF SCIENCE 
Prevention of corn and oats smut. Bull. la. Agr. Exp. Sta. 20: 721-728. 
The Apple Rust and Cedar Apple fungi in Iowa. Bull. la. Agr. Exp. Sta. 84 :2-55 
Some diseases of plants common to Iowa cereals. Bull. la. Agr. Exp. Sta. 18 : 488-505. 
Some fungus diseases in Iowa forage plants. Proc. la. Acad. Sci. 1:93. 
Some unusual fungus diseases of Iowa during the summer of 1903. 
Treatment of fungus diseases 1892. Bull. la. Agr. Exp. Sta. 20:711-712. 
Treatment of spot diseases of the cherry and currants, and potato blight. Bull la 
Agr. Exp. 20:716-720. 
Treatment of some fungus diseases. Bull. la. Agr. Exp. Sta. 17 : 419-443. 
By Pammel and Carver. Proc. la. Acad. Sci. 2:201-208. 
Some years ago, Dr. C. E. Bessey^ published occasional notes on the abun- 
dance of fungi in Iowa. -Dr. Halsted® also published notes on the abundance 
of certain species of fungi in the vicinity of Ames. Notes dealing with the 
abundance of American Fungi have been reported by many other investiga- 
tors^ Dr. Erwin F . Smith, in a paper on the peach curP, calls attention to 
the climatic conditions favoring the spread of peach curl, and Dr. Halsted® 
kept a record of the abundance of certain fungi in New Jersey. F. C. Stewart^ 
has made a series of experiments in the control of potato diseases of New 
York, giving notes on abundance. 
GENERAL PUBLICATION NOTES.* 
For a number of years, Mr. Orton of the United States Department of Agri- 
culture, Bureau of Plant Industry, has kept a record of the important diseases 
occurring in different parts of the United States. These records are based 
upon information received through assistance of Bolley, Carleton, Heald and 
other botanists in different states. Dr. Salmon® has, for a number of years, 
called attention in Gardener's Chronicle, to the spread of Powdery Mildew of 
the gooseberry. In Europe records have been kept by many investigators®. 
THE NATURE OF DISEASE. 
Prof. Marshall Ward says^®, “Disease, therefore, may be said to be a varia- 
tion of functions in directions or to extents, which threaten the life of a 
plant, the normal in all cases being the state of the plant characteristic of the 
* Stewart, Eustnce & Sirrine. Potato Spraying Experiments in 1902. Bull. N. T. 
Gen. Agr. Exp. Sta. 221: 236-261. 
Stewart, Eustace & Sirrine. Potato Spraying Experiments in 1903. Bull N. Y. Gen. 
Agr. Exp. Sta. 2^1:251-292. 
Stewart, Eustace & Sirrine. Potato Spraying Experiments in 1904. Bull. N. Y. 
Gen. Exp. Sta. 26^:95-204. 
Stewart, Eustace & Sirrine. 
Gen. Exp. Sta. 279:1-16. 
Stewart, Eustace & Sirrine. 
Gen. Exp. Sta. 299:238-321. 
Stewart, French & Sirrine. 
Gen. Exp. Sta. 697:439-463. 
2^merican Naturalist. 29:806; 21:666. 
3The Ash-leaf Rust. Bull. Dept. Bot. la. St. Coll. Agr. and Mech. Arts. 1886:55. 
Potato Spraying Experiments in 1905. Bull. N. Y. 
Potato Spraying Experiments in 1906. Bull. N. Y. 
Potato Spraying Experiments in 1907. Bull. N. Y. 
^Jones and Morse, Potato Diseases and Their Remedies. Ann. Rep. Vt. Agr. Exp. 
Sta. 1904-1905: 272-291; 1903-1904: 336-402 ; 1902-1903: 155-156.. 
Uour. Mycology. 6:107-110. 
®Notes upon Peronosporeae for 1892. Rep. N. J" Agr. Exp. Sta. 1898: 276; 1997: 440. 
■^Potato Diseases of Long Island in the Season of 1895. Bull. N. Y. Agr. Exp. Sta. 
101: 70-86. 
8A Monograph of the Erysiphaceae. Memoirs of ■ the Torrey Botanical Club. Vol. 9:71. 
®P. Magnus. Verzeichniss der von 11 August bis September in Bayern gesammelten 
meist parasitischen Pilze. Separat. Berichte d. Bayrischen Bot. Gesellsch. zur Erfor- 
schung der Heimischen Flora. 
lODisease in Plants: 91, 93. 
De Bary. Comparative Morphology and Biology of Fungi, Mycetozoa and Bacteria. 
