THE

BOTANICAL GAZETTE

EDITORS:

JOHN M. COULTER, Wabash College, Crawfordsville, Ind.
CHARLES R. BARNES, University of Wisconsin, Madison, Wis.

J. C, ARTHUR, Purdue University, Lafayette, ind.

VOLUME XII.

1887.
CRAWFORDSVILLE, IND.

PUBLISHED BY THE EDITORS.

PRESS OF

CARLON & HOLLENBECK,

INDIANAPOLIS, IND.

Notes on Umbelliferæ of the eastern United States (plates

On the causes of the variations in the contents of sucrose in

I. E. Stone. 123

Occurrence and function of certain nitrogenous bodies in

plants.

Undescribed plants from Guatemala. I. John Donnell Smith. 131

A simple and inexpensive self-registering auxanometer

A registering auxanometer (plate VIII) Charles R. Barnes. 150

Spirogyra under shock (illust.)

Vegetable parasites and evolution

Stanley Coulter. 153

W. G. Farlow. 173

The curl of peach leaves; a study of the abnormal structure
induced by Exoascus deformans (plate XIII)

Thalictrum purpurascens, var. ceriferum, in N. Carolina

A study of Silphium perfoliatum and Dipsacus laciniatus in regard to

insects

Bud on a pear stem (ill.)

Cultivation of Saccharomycetes

W. J. Beal and C. E. St. John. 268

The preparation of Agarics for the herbarium

Plan for a botanical laboratory (ill.)

Proliferous fungi (ill.)

Solanum triflorum

Coptis, section Chrysocoptis.

Dredge for Chara (ill.)

EDITORIAL-

. 18, 43, 68, 87, 112, 140, 163, 197, 252, 275

The GAZETTE for 1887.-Report of Commissioner Colman.- "Scientific

news."-The Hatch bill.-American botany.-Methods of teaching botany.-

The American professor of botany.-Meeting of the A. A. A. S. in New York.

-Citation of authorities for species. -Botanical text-books.-Work for Amer-

ican botanists.-Meeting of the Botanical Club of the A. A. A. S. at New York.

-Government aid in botanical exploration.-Republication of material.-

The need of botanical gardens.-Poisonous plants.

OPEN LETTERS-

19, 68, 88, 113, 142, 165, 198, 229, 253, 276, 297

22, 44, 70, 94, 118, 144, 170, 198, 234, 257, 282, 305