34 6 
Garden Work 
disease devouring the contents of the cells, leaving them 
quite dead. On examination of such leaves little dark- 
brown raised spots are to be seen. These, when placed 
under the microscope, are found to be clusters of spores. 
These spores germinate very quickly, and may be carried 
by insects, birds, &c., and deposited on healthy plants, 
where they speedily establish the disease. There are 
two kinds of spores produced by this disease, as also by 
many others, viz. teleutospores and uredospores, but in 
this disease they may frequently be found growing to- 
gether in the same clusters. 
If the disease is suspected, the plants should be gone 
over occasionally, and all leaves which are turning yellow' 
should be removed and burned before the fruiting stage 
is reached; this will check the disease, and prevent it 
spreading to other healthy plants. For outside carnations 
that are badly attacked, spraying with dilute Bordeaux 
mixture has been found effective, while for special plants, 
or those grown under glass, spraying with potassium per- 
manganate solution of a rose- red colour will keep the 
disease in check. In growing Carnations under glass, 
special precautions must be taken to give the plants 
plenty of air on all suitable occasions; for if the atmosphere 
gets at all stuffy, or the plants receive a check, the disease 
will very soon cause sad havoc among the plants. The 
disease also attacks allied plants, many of which are weeds, 
such as Chick weed, Spurrey, &c., therefore care should be 
taken to keep the garden perfectly free from such weeds 
where this disease is prevalent. 
