874 General Notes. [August i 
is the only one of the ordinary Fungi which is not represented 
by specimens, It will be seen by the above that this distribution 
is one of great value to the student of any department of fungol- 
ogy, as the specimens are not confined to sit restricted group of 
orders. The excellent index makes it an easy matter to find 
any species, and possessors of the work will thanle Mr. Stevenson 
for compiling it. 
Century x1 is of unusual interest, as it is a special one devolad 
to the Uredinez and Ustilaginez. In it there are thirty-five 
turies (all in Cent. 111) make fifty-four species. Nine specimens 
of Ustilago and two of Sorosporium represent the Ustilaginee. 
In this century a note informs us ERE the species “ have mostly 
been determined by Dr. W. G. Farlo 
Since writing the foregoing, we aae received a second valuable 
index also by Mr. Stevenson, and entitled “ An Index to Hab- 
itats,” giving in alphabetical order the habitats of the first thou- 
sand species. While not of as great value as the specific index, 
this will also prove to be useful. 
NECTAR IN SPERMOGONIA. —Rathay as shown that insects 
are attracted to the spermogonia of Uredinez by a sweet secre- 
tion. Many species of insects have been seen to visit the sperm- 
ogonia, and without question the spermatia are carried away by 
th ne would scarcely have expected such a device in plants 
so far down the scale of vegetable life. 
BOTANY AT THE MINNEAPOLIS MEETING OF THE A. A. A. Se 
Botanists will find much to interest them in and about Mion z 
lis in August at the meeting of the American Association ye a 
Advancement of Science. The collector will be able to add pe 
aud the sand hills to the eastward not less interesting and p Pr ast 
able. The whole country westward and south- westward < 
city is filled with ponds and lakes which teem with an un 
number of aquatic plants, especially of the lower oe 
mids and Diatoms of rare beauty occur in great n 
ought to engage the attention of the microscopist. ae 
several species abound, and will be in full fruiting stage e i 
time of the meeting. The larger fungi are likewise rep dew, 
by an unusual number of species, hile the rusts, smuts, min i 
etc., etc., sometimes denominated the micro-fungi, may 
up almost everywhere. Surely the association has not 
