1887. | BOTANICAL GAZETTE. 283 
xX 
Witt. THRELFALL is at work upon the gentians, and hasasked Amer- 
ican botanists to assist him in procuring plants, seeds, or dried specimens 
of our species. He offers to exchange or purchase, and will send a list 
oi desiderata upon > cee “His address is Hollowforth near Preston, 
Lancashire, Englan 
D as late as Tuly 29 has been received from Dr. G. M. Dawson’s 
party exploring the Yukon district. Oaly the great growth of sphagnous 
mosses and the abundance of reindeer moss give the country a different 
Se ieeteda tr rom that of British Columbia. Pats speak of sometimes 
struggling through tangled woods knee-deep in . 
RECENT W ec fei the root swellings and ror bacteria-like con- 
tents in the Legum and other plants are reviewed through eight 
= ot the Bulanisches “Centralblatt “(Ba. 31, Nos. 10 and 11) by ae Paul 
No reference is made to articles in Panel although such 
rie ‘ee published bork | in England and this country. 
TRIBUTION of rust exsiccati will shorty be begun under the 
ttle: Hate Uredineen, to contain the different stages, 2 nations uredo, 
teleutosporic, and the forms upon all the diferent 7 reach A . It will 
appear in fascicles of fifty numbers, at nine marks Address P. 
Sydow, _Hinegpagtondi si periey, apltantraag 3, sere 
per cent. of ordinary muriatic acid is added. In a few minutes a rose- 
violet color ee which increases in intensity for half an hour. 
In the 
of several well known trees. Pinus 8 po onderosa, var. scopulorum Eng., he 
found as far east as the 100th Oe ai along the “piufis of the Niobrara 
river, ith it grows Juglans nigra L., whose range is thus ex- 
tended westward to the 1 100th inecidion. Ostrya Virginica ool also ob- 
Served along the Niobrara river and in the Black Hills of Dako 
THE TOMATO DISEASE — “ black spot,” caused by Cl ae. Ly- 
Cond sici Plowright, seems to have become very virulent in England. The 
«nega and green, and thus gains access. The pee ton pansoied of 
© apex of the fruit is one of the peculiarities of the 
, THE HERBARIUM of H. H. Ba beock, si ae a une prepared 
ist of the plants of Chicago and vicinity some fifteen years ago, was re- 
eos sateen to the Northwestern University at Evanston, Ill., by his 
“dy It contains over 10,000 species. The herbarium of E. R. 
ennai of “Hartford, Conn., deceased, containing about 2,500 species, 
versity a ap ee ee from Cuba, has been presented to Brown Uni- 
N American Garden, Prof. L.. H. Bailey, Jr., discusses the i ope of 
ization. The term he restricts to the operations of man in habit- 
a change in the eythwres plant; 2. Through a variation in 
hs moditication or variation in constitution 
bit are separately nonaaeeed 
