1897 THE MICROSCOPE. 5 
If he succeeds in getting the intelligent farmers to ob- 
serve carefully the parasitic plants which destroy their 
crops, and to study and become familiar with the facts that 
have already been established by investigators, he will 
have rendered an incalculable service. 
If the farmers both in France and America would study 
plants under their normal conditions, so as to become in- 
terested in them and in their physiological activities, they 
would then havea better knowledge of how to prevent or 
combat their diseases. Bnd it might not be long before 
the intelligent farmer would feel that a microscope was a 
necessity to the greatest success of his farm. 
Appleton’s Popular Science Monthly.—Under the title 
“A year of the x-rays,’ Prof. D. W. Hering tells in what 
directions progress has been made upon Rontgen’s famous 
discovery. Some of the advances are indicated in the 
illustrations accompanying the article. Surgeon-General 
George M. Sternberg reviews our knowledge of the Ma- 
larial Parasite and other Pathogenic Protozoa, telling how 
they were discovered and upon what grounds they are ac- 
cepted as specific infectious agents. 
Pritchard’s Infusoria.— We have for sale one copy of the 
latest edition of this beautiful work with colored plates. 
Price $30. Also Smith’s British Diatomaceez,two volumes, 
uncut. Price $30. These works are very scarce and can 
only be got. as in this case, when a microscopist from 
Europe finishesusingthem. Wetrust that some Scientific 
Society or Public Library will be desirous to possess them 
since they are very rare volumes. 
Numbers eleven and twelve of Liloyd’s Photograyvures 
of American Fungi have recently been distributed. They 
represent respectively Lepiota morgani Peck and 
Sparassis herbstii Peck, two interesting species. The 
first was photographed as it grew in the field, and makes 
an unusually attractive and characteristic picture. 
