690 BOTANY. 
10 feet in height.” Then follows again an analysis of the trees 
of California and Oregon, including the many forms there that 
have been of interest in the world. 
In Alaska, the tenth region or district, the data are insufficient 
for the map, but there are heavy forests there that are well known. 
The author rapidly discussed the original disposition of forests, 
. showing what variety of causes have controlled this. Then the 
economic value of some of the industries directly dependent on 
them were alluded to, and the author ended his paper with some 
conelusions regarding the future supply, and suggestions regard- 
ing the planting of trees.— Wm. H. Brewer. 
Apoxa MOSCHATELLINA L., 1s Iowa !—A correspondent in the 
Northeastern part of the state sent me some time since speci- 
mens which prove to be Adoxa Moschatellina L. Its locality is 
given in the “Flora of North America” as between lat. 54° and 
64°, and on the higher peaks of the Rocky Mountains as far south 
as lat. 42°. Professors Porter and Coulter in the ‘Flora of Col- 
orado” call it a “sub-alpine, common” plant. The last named 
gentleman collected it on Mt. Lincoln at the altitude of 13,000 
feet. Mr. Watson in a private note says, “not found before this 
side of Colorado and the mountains, I believe.” 
Its occurrence ‘in Iowa is certainly unlooked for. It grows 
abundantly on a ‘rocky hillside, and was in bloom in May. m 
locality in this case is best given as “Upper Iowa River, Jowa. 
—C. E. Bessey, Agricultural College of Iowa, Aug. 31, 1874. 
Dispersion OF SEEDS BY SHOOTING THEM OFF. — Our Corre- 
spondent, Mr. Brandegee.of Colorado, ‘writes : — 
ed an inter- 
“ While drying seeds of Jonidium lineare, I notic I 
esting habit it has of shooting its seeds. Each capsule ra 
shot off singly, as one shoots orange 
fingers. A good shot will go fifteen te twenty feet.” | 
All violets do it, and Jonidium is of ‘this family. To render 
the operation clearer, it should be added that the three firm valves 
into which the capsule splits, after their separation fold together 
on their axis, to which the seeds are attached in a row, and a 
the gradually increasing pressure so applied to the hard ane 
Smooth-coated ovoid seeds that fires them off. — Eps. 
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