170 How TO Grow Cut Flowers. 



spots. These are raised above the surface and will rub 

 off and discolor the hand when it is passed over them. 



Prof. Arthur, of Purdue University, describes this 

 very fully in a paper read before the American Carna- 

 tion Society at Buffalo, in 1892, from which I make 

 the following extract : 



"Rust has long been known in Europe, and is especi- 

 ally common in Italy and Germany. The first impres- 

 sion that it was brought from Europe in the importa- 

 tion of 1891 is found to be erroneous, it having been 

 found by Prof. Taft, of Lansing, Mich., in 1890, and 

 was known in some places along the Hudson River 

 three years previous. So far as present information 

 goes, the distribution of carnation rust in America has 

 been accomplished within four years. It is now known 

 to occur in Massachusetts, Pennsylvania, New York, 

 Ohio, Michigan and Indiana, and a few infected centres 

 might distribute the rust by means of rooted cuttings, 

 as widely as there is a demand for the flowers. 



" A precautionary measure, after rust has appeared 

 in a house, is to keep the air as cool and dry as is com- 

 patible with the health of the plants, thus retarding 

 the growth and distribution of the spores. 



" Wherever the rust has obtained much headway, 

 and especially where it appears shortly after the plants 

 have been housed in the fall, the use of some fungi- 

 cide is almost imperative." 

 • The full text of this paper may be found in Vol. 7, 



