406 BOTANICAL GAZETTE [May 
its way into the archicarp, giving rise by its activity to the system of hyphe 
that constitutes the ascocarp. The last explanation is apparently suggested 
by Oltmanns’ recent work on the Rhodophycee.—B. M. Davis. 
BULLETINS of the experiment stations not heretofore mentioned relating 
to plant diseases are as follows: ‘‘ Diseases of plants,” by A. P. Anderson 
S. C., no. 36, pp. I-17, illust.), gives a brief popular account of the rdle of 
tungi and bacteria as disease agents. The same author writes upon “ The 
asparagus rust in South Carolina” (S. C., no. 38, pp. I-10, illust.), while 
Byron D. Halsted gives more extended observations upon “ The asparagus 
rust, its treatment and natural enemies”’ (N. J., no. 129, pp. I-20, illust.). In 
a ‘Preliminary report upon diseases of the peach ; experiments in spraying 
peach trees,” Aug. D. Selby (Ohio, no. 92, pp. 179-268, illust.) gives a large 
amount of information with much original observation, to which a serviceable 
index is added. The same investigator also writes upon ‘“‘ Some diseases 
of wheat and oats” (Ohio, no. 97, pp. 31-61, illust.) especially of smuts, rust, 
scab and glume spot. The Fusarium causing scab of wheat is said to 
e F. roseum Lk. The ascigerous stage was found and almost certainly 
identified as (sibderella Saubinetii (Mont.) Sacc. Cultures were made, but 
attempted infection of living plants was not successful. In an account of 
P. H. Rolfs (Fla., no. 47, pp. 117-153, illust.) recounts practical ob 
upon the cause and prevention of eleven diseases. Black rot Ce 
porium) is the most prevalent, and can be prevented by spraying wit 
: A . ss “1, ed : 
Bordeaux mixture ;_a bacterial disease is common and less easily mee 
gus bu 
treatise. Observations on “ Cotton rust” are given by F. S. Earle (Ala., 00. _ 
99, pp. 281-309) in addition to previous accounts by Dr. Atkinson. 
Duggar (Cornell, no. 163, pp. 339-363, illust.) has studied ‘* Three mee 
fungous diseases of the sugar beet,’ which are root rot (Rhizoctonia e 
Kiihn), leaf spot (Cercosfora beticola Sacc.) and scab (Oospora scabies ~~ 
Much original information is given regarding the fungi, the diseases they 
important notes on “ Peach leaf curl and notes on the shot-hole 
of peaches and plums” (Cornell, no. 164, pp. 371-388, illust.), 
the value of early spraying with Bordeaux mixture for the former, peat 
ing that the latter is often produced by spraying and other: DOS" ae is 
Causes. A concise account, with observations within the state of baa oe 
given by L. R. Jones (Vt., no. 66, pp. 1-16, illust.) of “ Club root and bla 
