Sept. 1904] Notes from Mycological Literature 
285 
allows the plant to make use of the sugar to form a greater 
amount of dry substance in a given time; hence the important 
question of the amount of C 0 2 which is produced at the same 
time — the objective point of the work here reported. 
The articles in the Bulletin de la Societe Mycolo- 
gique de France, XX 2e foscicule are as follows: N. Patouil- 
lard, Champignons algero-tunisiens; M. Molliard, Forme con- 
idienne du Daldinia concentrica; Hariot et Patouillard, Cham¬ 
pignons nouveaux de THerbier du Museum; A. Vast, A propos 
de la culture d’Oospora destructor ; Maublanc, Especes nouvelles 
de champignons inferieurs; E. Boulanger, La culture artificielle 
de la truffe. 
James VanHook in Cornell University Agricultural 
Experiment Station Bulletin 219, gives an account, with 
numerous illustrations, of some of the diseases of Ginseng. The 
“Wilt” is caused by Acrostalagmus albus Pr., and Damping off by 
Rhizoctonia. Other diseases are discussed, as Nematode Root 
Gall, Black Rot, Soft Rot, and Alternaria or Leaf-spot. 
A BRIEF POPULAR ACCOUNT OF THE BLACK FUNGI, PYRENO- 
mycetes, is given by C. L. Shear in the July No. of the Plant 
World, pp. 172-4. Of the ten thousand or more species which 
have been described, the complete life history of perhaps less 
than one hundred is known, and so the author states that those 
who are looking for a fertile field for research can here find 
problems in abundance, either biologic or taxonomic. 
The Report of the Botanical Department of the New 
Jersey Agricultural College Experiment Station for 1903, 
by Byron D. Halsted and James A. Kelsey contained seven my¬ 
cological items — the most extensive being that pertaining to the 
Powdery Mildews, pp. 517-536, illustrated by two plates. The 
treatment is popular and concludes with a preliminary list of the 
species (22) of powdery mildews of cultivated plants, with the 
leading hosts under each. 
Onion Blight (Peronospora schleideniana) by H. H. 
Whetzel is Bulletin No. 218, Cornell University Agricultural 
Experiment Station, and treats in extenso a serious outbreak of 
Onion Blight in 1903 — the first part being a popular account 
of the disease with remedies; part second is a more technical 
account of the Onion Blight and other diseases, illustrated by 
several text figures. 
A remarkable Lichen was described by Briosi et Farneti 
in Atti del 1 st. bot. dell Universita di Pavia, VIII, 1902, under 
the title Intorno ad un nuovo tipo di Licheni a talla conidifere 
che vivono sulla Vite, finora ritenuti per Funghi. The plant, 
