NOTES AND ABSTRACTS. 



381 



phytolymus, a bud-eating weevil, which does much damage to orange, 

 lemon, and peach trees, can be destroyed by spraying with arsenate 

 of lead.— .S. E. W. 



Peach, A New Leaf Rust of. By S. Hori {Phytopathology, ii. 

 pp. 143-145; Aug. 1912; 2 plates). — A new species of Puccinia is 

 described on peaches in Japan and named P. pruni-persicae. The 

 aecidial stage is so far unknown. No meso-spores were found as in 

 Puccinia pruni-spinosae. — F. J. G. 



Peaches. By W. J. Allen {Agr. Gaz. N.S,W. vol. xxiii., pi i., 

 pp. 65-68). — Early in the season apply to peaches, plums, and apricots 

 4 lb. of the following mixture to each tree : 10 lb. of sulphate of 

 ammonia, 10 lb. of sulphate of potash, and 30 lb. of superphosphate. 

 An orchard should be planted with more than one kind of peach. 



S. E. W. 



Peap, A Double-Flowering- * Beurr^ Nag-hin ' (Rev. Hort. 



p. 220, May 16, 1912). — All the trees of this variety in the orchard of 

 M. P. Passy have produced double flowers this season. The doubling is 

 of various degrees, but practically all are affected, despite great differ- 

 ences in environment, nature of graft, &c. The crop, however, had not 

 been affected.— C. T. D. 



Pear *SolaneP.' By F. Turetschek (Oestr. Ga'rt. Zeit. vol. vii., 

 pt. vi., pp. 226-228; 1 fig.). — This pear is a local variety from North 

 Bohemia. It succeeds best grafted on the common pear; the fruit 

 has luscious greenish-white flesh, small core, and ripens in August. 



S. E. W. 



Peat-bogs (Cranberry Island) in Ohio. By Alfred Dach- 

 nowski (Bot. Gaz. pp. 1-33, July 1911; 7 figs.; pp. 126-150, 

 Aug. 1911; 1 fig.). — The 'vegetation of Cranberry Island, in Buckeye 

 Lake, Ohio, and its relations to the substratum temperature and 

 evaporation are very thoroughly discussed in this important paper. 

 The lake (south of 40° Lat.) is one of the most southerly stations 

 of peat plants, and has been inundated by artificial dams, built in 1828 

 and 1832. Depths of 40 feet of peat without bottom occur in various 

 parts of the island. 



The central part of the island consists of Sphagnum with Vacci- 

 nium macro carp on and Rhynchospora^ Eleocharis, Carex, Scheuch- 

 zeria, Eriophorum, Osmunda, Sundew, and Bogbean forming a low, 

 dense, compact growth from 6 inches to 1^ foot above the peat sub- 

 stratum. This is similar to plant societies in more northern regions, 

 and probably represents an early stage in the occupation of the ground 

 after the retreat of glacial conditions. 



The border zone, forming a broken fringe round the island (and 

 also in ponds in the Cranberry-Sphagnum zone), consists of Swamp- 

 I^oosestrife, Decodon, and Bulrush, with Plibiscus, Sagittaria, Poly- 



VOL. XXXVIII. G C 



