105 
settled for tlie former, Plowright’s experiments with the hitter have only 
brought forth negative results. The chapter has a very practical appli¬ 
cation in that the decision of the question decides the best method to be 
followed in dressing seed to prevent smut. The fact that the question 
has been decided in case of bunt has enabled farmers to practically 
avoid it by a little exertion. 
The chapters on spores culture and artificial infection of plants had 
perhaps been anticipated as eagerly as any by practical workers, and, 
while we could wish they had been longer, they are full of valuable 
suggestions. 
The descriptions of species are full and accompanied by lists of syn¬ 
onyms, exsiccati, dates of appearance and disappearance, and biolog¬ 
ical notes. Plowright follows Winter in his method of citing authority. 
Where there is a double citation he retains the original authority in 
parentheses and omits the other. He has also followed Winter’s clas¬ 
sification, but has introduced the Brachyuromyces and Brachypuccmia 
to cover those forms having spermogonia, uredospores, and teleuto- 
spores. There are no TJromyces corresponding to this division, but the 
following Puccinias are included under it: Puccinia suaveoleus , P. bul- 
latj , P. liieraci , P. centaurece, and P. taraxaci. Winter places the first 
two under Hemipuccinia and includes hieracii and taraxaci under P. 
flosculosorum , one of the Antepuccinias. 
In Phragmidium Plowright omits any subdivisions, but in Melampsora 
he departs entirely from Winter’s arrangement and gives the following: 
I. Melampsora. Teleutospores formed outside the epiderrhal cells of 
* 
the host plant, and remaining single. 
II. Pucciniastrum. Otth. Teleutospores formed outside the epider¬ 
mal cells, becoming longitudinally or obliquely divided into from two 
to four cells. 
III. Thecopsora. Magnus. Teleutospores formed in the epidermal 
cells, becoming confluent into irregular circumscribed masses. Uredo¬ 
spores in pustular heaps. 
IV. Melampsorella. Schroet. Teleutospores undivided, formed inside 
the epidermal cells (intracellular), hyaline, confluent in wide-spreading 
masses. Promycelial spores hyaline. Uredospores echinulate, inclosed 
in a pseudoperidium. 
Coleosporium and Chrysomyxa are subdivided in the same manner as 
TJromyces. 
There is a supplement containing a description of species of the re¬ 
lated genera, Oraphiola , Bntorrhiza , Tuberculina , and Protomyces. 
The book also contains a copy of the Massachusetts barberry law and 
a glossary, and is well indexed— E. A. Soutiiwortii. 
