DISEASES 89 
ground, will kill wireworm and other larvae. It must be 
remembered, however, that gas-lime applied in a fresh state 
is injurious to plant life. 
DISEASES 
Carnations in general are subject to diseases peculiar 
to their species, and they are usually rendered epidemic 
by unsuitable culture and management. It is strange that 
certain varieties of Carnations are more prone to disease 
than others. This being so, isolation in the first place (as a 
preventive of the spread of disease spores) of these plants is 
essential, and, in the case of badly affected plants, destruc- 
tion by burning is profitable in the end, as they might other- 
wise contaminate others that are not in the least weakly. 
Carnation Leaf-Spot (Uromyces Dianthi)—This dis- 
ease, although not a deadly one, is the most prevalent, and 
its presence on the plants affected may at first be detected 
by the raised, warty-like appearance of the surface of the 
foliage and on the stems. This raised surface bursts, and 
the spores in the form of a fine, dark-brown, dust-like 
substance are scattered over the plants. Those badly 
infested soon become covered with infectious spores if 
preventive measures are not taken. Sulphide of potassium 
dissolved at the rate of one ounce to three gallons of water, 
and sprayed over the plants, is a good remedy, taking care 
to keep the liquid from touching white paint-work, which 
it soon discolours. Veltha Emulsion is also a good pre- 
paration for checking the spread of fungal diseases, but 
my experience is that where the trouble has become 
deep-rooted, no remedy is really effectual in eradicating it. 
