192 PATHOLOGY [BoT. Absts., Vol. X, 



1268. Johnson, T., and J. G. Gilmore. The occurrence of Dewalquea in the coal bore at 

 Washing Bay. Proc. Roy. Dublin Soc. 16: 323-333. PI. 11-12. 1921.— Dewalquea hibernica 

 from the upper Oligocene of Washing Bay, Ireland, is described, together with the microscopic 

 characters of the foliage. The author discusses the aflSnity of the genus and inclines to regard 

 it a primitive member of the Juglandaceae. — E. W. Berry, 



1269. Knowlton, F. H. Criteria for determination of climate by means of fossil plants. 

 Bull. Geol. Soc. Amer. 32: 353-358. 1921. 



1270. Knowlton, F. H. Further remarks on the evolution of geologic climates. Amer. 

 Jour. Sci. 2: 187-196. 1921. — The author replies to criticisms and restates his conviction that 

 throughout most of geologic time earth and not solar control was a dominant factor in terres- 

 trial climates. — E. W. Berry. 



1271. MooDiE, Roy L. Osteomyelitis in the Permian. Science 53: 333. 1921. — The 

 writer records infection by bacteria located in the spine of a reptile of the Dimetrodon type. 

 — C. J. Lyon. 



1272. Steinmann, G. Rhatische Floren und Landverbindungen auf der Siidhalbkugel. 

 [Rhaetic floras and geography in the southern hemisphere.] Geol. Rundschau 11: 350-354. 

 Fig. 1. 1921. — The following fossil plants are recorded from the dark shales of Biobio in 

 southern Chile: Pecopteris (Asterotheca) Cotioni Zeiller, Cladophlebis Roesserti Presl, Clado- 

 phlebis australis Morris, Thinnfeldia c.f. rhomboidalis Ett., c.f. T. odontopteroides Morris, 

 Clathropteris platyphylla Goepp., c.f. Podozamites distans Presl. These are considered as 

 indicating a Rhaetic age and denoting some land connection at that time with Australia and 

 New Zealand. — E. W. Berry. 



PATHOLOGY 



G. H. Coons, Editor 

 C. W. Bennett, Assistant Editor 



(See also in this issue Entries 911, 917, 922, 930, 1019, 1020, 1099, 1117, 1143, 1167, 1201, 1203, 



1212, 1217, 1218, 1228, 1232, 1243, 1245, 1253) 



PLANT DISEASE SURVEY; REPORTS OF DISEASE OCCURRENCE AND SEVERITY 



1273. Arthur, J. C. Origin of potato rust. Science 53: 228-229. 1921.— The potato 

 rust {Puccinia pitteriana, also found on tomatoes), mentioned by the writer in a short paper in 

 Science (see Bot. Absts. 7, Entry 1127) was still occurring in Ecuador in 1919. It has not yet 

 entered the U. S. A. Evidence is given in support of the theory that this rust has originated 

 "somewhere between Ecuador and Costa Rica on hosts native to the locality." — C. J. Lyon. 



1274. Chipp, T. F. Another wet-rot and Poria hypobrunnea. Gardens' Bull. Straits 

 Settlements 2 : 429-432. 1921. — This is an account of Poria hypobrunnea on Hevea brasiliensis 

 in the Malay Peninsula, and a record of the occurrence of a similar fungus in Singapore upon 

 Spathodea companulata. — /. H. Burkill. 



1275. Cockayne, A. H. Powdery scab in potatoes. New Zealand Jour. Agric. 21: 169- 

 174. PI. 1. 1921. — Australia has declared a quarantine against potatoes from New Zealand 

 on account of powdery scab {Spongospora subterranea). This disease is very common in some 

 sections of New Zealand, but it does not appear to be destructive to the crop. Powdery 

 scab is not known to occur in Australia. The distribution and characteristic appearance of 

 the disease are given. — N . J . Giddings. 



1276. Lee, H. Atherton, and Mariano G. Medalla. Leaf stripe disease of sugar 

 cane in the Philippines. Science 54: 274-275. 1921. — It is thought that the sugar cane downy 



