SECTION OF VEGETABLE PATHOLOGY. 347 
Tron is quickly corroded and leather soon destroyed by the caustic 
action of the copper salt. . 
Experiments have been made in treating the Fusicladiwm of the 
apple with a solution of hyposulphite of soda, 1 pound of the 
sulphite to 10 gallons of water, by Mr. Ei. 8. Goff, of the New York 
Agricultural Experiment Station, He made applications to one tree 
only, a Siberian crab, which had for several years been so much 
aftected with the fungus as to render the fruit entirely unfit for use. 
_ Applications were made to one-half of this tree May 4, 9, and 15. 
The result was that on the sprayed part of the tree the per cent. of 
uninjured fruit was double that on the unsprayed part, while the 
per cent. of third quality or much injured fruit was one-half less. 
The year following the same tree was again treated, four applica- 
tions being made, viz, April 22, May 6, 10,17. The strength of the 
solutions in the first three applications was 1 pound hyposulphite 
to 10 gallons water ; in the fourth the solution was reduced one-half. 
The part of the tree sprayed bore a fair crop of medium-sized fruit, 
while on the unsprayed side the apples were so affected by the fungus 
that none matured. 
This remedy is cheap and easy of application, and, should it gener- 
ally prove to be as effective as in the case here cited, its value can 
scarcely be over-estimated. ' Itdoes not possess the lasting preventive 
qualities of the preparations of sulphate of copper, as its action is 
immediate, and, other things being equal, preference should be given 
to the copper compounds. 
(g) BIBLIOGRAPHY. 
Arthur: Report New York Experiment | Penhallow, D. P.: Twelfth Annual Re- 
Ps aS ad at By Rg ot ie ae) TE ee tS ~ oF, Ee ee 
TN Ee a aoe ee a EL hy tee eee me 
par ih Poh ste » Vie Ue 7 oe 2 4 . . 
is 
_ Station; 1884; p. 370. 
Berkley: Gardener’s Chronicle; 1884; p.. 
_ 368; Sub. Cladosporium pyrorum. 
Burrill: Transactions Mississippi Valley 
Horticultural Society; 1883; pp. 202- 
207; Agricultural Review (New York), 
November, 1882. 
Cooke: Grevillea II; p. 64; Sub. Spiloceea 
pomi. 
Eriksson: Bidrag Vara odlade vaxters 
sjukdomar; Vol. I; p. 61. 
Frank: Die Kranlheiten der Pflanzen; 
Breslau; 1880; p. 587; fig. 106. 
Fries: Systema mycologicum; vol. 3; p. 
504; Sub. Spiloccea epiphylia. 
Galloway: Annual Report Missouri State 
Horticultural Society; p.—; 1886. 
Goff: Fifth Annual Report New York | 
Agricultural Experiment Station; p. 
177 
Klee, W. G.: Biennial Report California | 
State Board Horticulture; 1885-86; pp. 
408-413; figs. 1-2. 
Pammel, L. H.: Prairie Farmer; 14th 
November, 1885. 
Peck: Thirty-fourth Report New York 
State Museum of Natural History(1881); 
p. 32; pl. 4; figs. 1-3. 
eg Montreal Horticultural Society; 
p. 20: 
Saccardo: Sylloge; vol.4; p. 345. 
Sorauer: Monatsschrift des Vereins zur 
Befoérderung des Gartenbaues in den 
kOnigl. preuss. Staaten; 1875; XVIII; 
pp. 5-15; pl. 1. Ueber die Entste- 
hung der Rostflecken auf den Friich- 
ten des Kernobstes; Tageblatt der 47. 
Versammuilung deutscher Naturforscher 
und Aertze in Breslau vom 18. bis 24. 
September, 1874, Breslau, 1874, s. 84. 
Aftrycht i Botait: Zeit.; 1875; 5: 50: 
Handbuch der Pflanzenkrankheiten. 
(1886) II, s. 892. Die Obstbaumkrank- 
heiten; Berlin; 1882; s. 100, etc. 
Trelease: First Annual Report Wiscon- 
sin Experiment Station; 1884; p.45- 
56; 8 figs. Report Minnesota State 
Horticultural Society; 1886; p. 52. 
Parasitic Fungi of Wisconsin; No. 
101. 
Von Thumen: Fungi Pomicoli; pp. 15- 
17; pl. 2, fiz. 2; Wien; 1879; p.15. 
| Wallroth: Flora cryptogamica German- 
ica; 1833; Sub. Cladosporium dendriti- 
cum. 
