272 
Pilzkrankheiten der Pflanzen 
in for a large share of the blame. Transporting diseased logs and infected 
nursery stock are other means of spreading the disease. 
Individual trees may perhaps be saved by special treatment, but 
the only efficient remedy for controlling the disease is to cut down injured 
trees and burn the infected parts. Diseased timber may be utilized for 
various purposes. No evidence has yet appeared that the disease is being 
checked by natural agencies 
During the summer of 1912 the Commission had about 200 men 
in the field locating and removing diseased trees. A quarantine on nur¬ 
sery stock requires certificate of inspection, and all apparently healthy 
trees are dipped in lime-sulfur solution or Bordeaux mixture before sen¬ 
ding out. C. J. Humphrey (Madison, Wise.). 
Pennsylvania Chestnut Tree Blight Commission, Treatment of orna¬ 
mental Chestnut trees affected with the blight disease (Bui.2, 
7 pp., 1 pi.; Oct. 1912). 
The bulletin is intended as a guide in treating ornamental or orchard 
trees. A brief description of the Chestnut bark disease is given, and a 
warning is issued against the use of fake or dlogical remedies. In app¬ 
lying surgical methods the disease lesions should be cut out with a chisel 
well outside the boundary of the fungus, and including three or four 
annual rings of sapwood. Infected branches should be removed a foot 
or more below the diseased area. As a wound dressing thick coal tar 
diluted with creosote is considered best. Corrosive sublimate (1—1000) 
or 5% formalin should be followed by coal tar, lead paint or shellac, 
or a mixture of 1 gallon pine tar, 2 quarts rosin, and 1 quart linseed oil. 
All diseased wood and bark should be burned, underbrush should 
be removed and the ground under the tree sprayed with lime-sulfur mix¬ 
ture or other disinfectant. The use of climbing irons should be strictly 
guarded against. Spraying with lime-sulphur or Bordeaux, at inter¬ 
vals of two weeks, may be successful in preventing reinfection. White¬ 
wash appears of some benefit. The base of trees should be painted with 
tree varnish or “tangle-foot“ to keep insects away. 
These remedies are not recommended for trees over 40 feet high, 
those nearly girdled, unhealthy trees attacked by borers or wood-rotting 
fungi, or in localities where the blight is under slight control. 
The application of 4 ounces muriate of potash, 13 ounces nitrate of 
soda and 14 ounces acid phosphate per hundred square feet will assist 
diseased trees to recuperate. C. J. Humphrey (Madison, Wise.). 
DOROGIN, G., Eine Pilzkrankheit der Bergkiefer. [Russisch.] 
(Lësnoj Journal [Forstjournal |, St. Petersburg 1912, 42, 1292—1294; 
1 Taf.). 
Im Park des Forstinstituts zu St. Petersburg beobachtete Verf. 
eine Erkrankung der Nadeln von Pimos montana. Auf den Nadeln 
traten mehr oder weniger ausgebreitete Flecke auf. Der sie verursachende 
Pilz bildet ein höckerförmiges Stroma mit mehreren Kammern, in welchen 
längliche, farblose, undeutlich 2 — 4 zellige Sporen sich entwickeln 
(45—22x5—3 fx). Verf. nennt den Pilz Cytosporina septospora n. sp.; 
Arten mit mehrzelligen Sporen waren in der Gattung Cytosporina bisher 
unbekannt. Tranzschel (St. Petersburg). 
