1886.] BOTANICAL GAZETTE. 193 
Corrections, and a Dredge. 
Please allow me to thir one or two t, Lame sag errors which occur in 
my aiticle on collecting water plants, on page of your last issue. I said, 
) ~ ant t 
lea,” not “ thirteen species as you have it. On pa 0 the phrase “the speci- 
mens should first be ted in water upon re ao in thas same ieguier ras 
the coarser plants,” should read, “floated in water upon card-board and then 
dried on the board, in the same manner,” etc. 
I beg leave to add a word as to a dredge. A very —— ae can 
be made of a small garden rake, such as is kept in almost all hardw ores 
arden 
2 
near the teeth, and your dredge is ready for use. It can be carried in the 
pocket or case till wanted, and —_ it may bs tied to a pole, and used out of a 
boat or from the shore at pleasu 
For depths of water erected thats eight feet, something like the ves recom- 
d 
mended by Dr. Allen is better, but that can be used from a boat only, and is 
constantly liable to turn on the back, or to have the line seb iid horial fouled 
on the bottom. It does admirably for Characez, but the orks nner) for 
larger aquatics. “den bie ORO: 
Ashland, Mass. 
Exotics in the Herbarium. 
It might be well for the different herbaria, now so widely distributed, to 
add, for the particular instruction of the public, a collection of the exotics 
ig Itivated in nse Pte are, of course, aN to 
i i a de- 
dans Daberit Providence, RL. 
Books of Reference, 
My books of reference are kept in book-cases n the room assigned to the 
herbarium, — De Candolle’s Sov eae mus Walper’ s risen Miiller’s 
Annales, m & Hooker’s Genera Plantarum, and the many local floras, 
ete., etc., are all eee in the herbarium _ like manner the systematic liter- 
ature of the lower plants is oe me in the same room. 
I speak of this, because w that i = many places the goa books are 
still considered as belongin 4 ‘the neral college or pelea ty li 
University of Nebr moh ag 8 mn, Neb. CHARLES E 
Siuthetiean 4 for Sale. 
Mrs. = pole pire wl the late James F. adnan, of F rodsham, Eng- 
land, bei ing in straitened circumstances, desires to sell her husband’s herba- 
rium of British and rane plants, valued at £30.00 for the small sum of £10.00. 
Her address i a Main street reet Prods ap as a The specimens I have received 
from Mr. Robinson were excellen wai a good chance to secure a herbarium 
riage Species and to help a coun teil who is left a yn ildren to 
nae e 
