30 
occurred. In such localities, reproduction is gradually beginning 
to take place. 
In no other portion of Montana do we have a zone of injury 
comparable to that surrounding the Washoe smelter at Anaconda, 
where radiating from a central point, the injury decreases 
gradually outward in every direction from a common center. 
In this region where variation in the bands of injury occur, they 
can be shown to be due to the tendency of the clouds of smoke in 
damp weather either to settle in the valleys or to follow the 
easiest channels of surface configuration, here thrown against a 
slope, and there deflected away by и а protected slope or 
valley. 
Acknowledgment should be made to Messrs. W. B. Greeley, 
assistant forester, and F. A. Silcox, district forester of District 
No. 1 of the Forest Service, for their courtesy in securing data 
on the time of occurrence of the Red Belt injury of 1908-9, its 
scope, and extent; and to Messrs. J. F. Preston, D. T. Conkling, 
D. T. Mason, R. P. McLaughlin, C. W. Hudson, forest super- 
visors, and others of the forest service who contributed the data 
just mentioned. 
`+ OFFICE OF INVESTIGATIONS IN FOREST PATHOLOGY, 
BUREAU OF PLANT INDUSTRY 
WASHINGTON, D. С 
THE GENUS HAMELIA JACQ. 
Bv N. L. BRITTON 
Mr. H. F. Wernham has recently contributed to the Journal of 
Botany* a very useful account of Hamelia, a genus of Rubiaceae, 
comprising, according to his studies, twenty-eight species, all 
American, ranging from Florida and Mexico to Paraguay. 
Of the twenty-eight species recognized, the following are 
described as new: 
Н. magniloba. Nicaragua. 
. H. grandiflora Spruce. Chimborazo. 
í * Jour. Bot. 49: 206-216. Jl tror. A supplementary note, loc. cit. 346. 
I9II. 
