411 
experience, though in Rep. U. S. Dep. Agric. for 1888 it is said 
to have the flowers “white or pale blue.” 
T. D. A. CockERELt. 
Las Cruces, N. Mex. Aug. 27, 1893. 
Reviews of Foreign Literature. . 
An Introduction to the Study of the Diatomacee. By Frederick 
Wm. Mills, F. R. M. S., author of Photography applied to the 
Microscope, with a Bibliography by Julian Deby, F. R. M.S. 
(London, Iliffe & Son, 3 St. Bede St., Ludgate Circus. Wash- 
ington, D. C.: The Microscopical Publishing Co., 1893.) 
This beautifully printed book is somewhat of a disappoint- 
ment to the reviewer, and were it not for the extensive bibliog- - 
taphy it would be a “twice told tale,” and to us not as well told 
as it could have been. True it is, that in an “Introduction” an 
author is not supposed to write a monograph upon the subject, 
yet we feel that the description of what diatoms are, their habitats 
and their physiological properties is told in a very cursory man- 
ner, and hardly full enough for the beginner to get a real knowl- 
edge of the plants. We much prefer other articles upon the sub- 
ject, both for logical arrangement, completeness and lucidity. 
The individual chapters upon Structure, Modes of Reproduc- 
tion, Collecting and Mounting are too brief, and we cannot but 
feel that the “ Introduction” compares very unfavorably with the 
“Bibliography,” which of itself makes the book of paramount 
value; such a book that no worker in the diatoms can get along 
Without, and one that will prove of inestimable stimulation to the 
amateur.* 
The paper, printing and binding are especially commendable, 
and the book is well worth the price asked for it. ae ae 
Index to Recent Literature Relating to American Botany. 
Additions to the Preliminary List of the Uredinee of Ohio. Freda 
Detmers (Bull. Ohio Agric. eee Sta. i. 171). 
* We note, however, many aes in ~~ Bibliography especially in the numerous 
Papers of the later ES ci . 
