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when once introduced into the land is somewhat difficult to eradi- 
cate. When sugar beet is attacked in the seedling or young stage, 
the formation of a tap-root is arrested, and several long, slender 
rootlets take its place, to which numerous distended female eelworms 
are attached, fig. 1. This eelworm has been observed on about 
50 different kinds of plants, among which may be mentioned, 
mangolds, cabbages, radish, spinach, Agrostemma githago, &c. 
The treatment for the destruction of this eelworm is the same as 
for H. radicicola. 
Tylenchus devastatrix, Ritzema Bos, is a third eelworm which 
cma which is Aa ptiginnets to the ee of 
gradually increase in size, and according to ‘the severity of 
the attack, and the rate of spread of the eelworms through the soil, 
the crop becomes more or less involved. In the end the attacked 
plants become brown and dead, leaving bare patches in the field. 
A clover plant infested with eelworms presents a very characteristic 
appearance. The branches, where they spring from the root, are 
very much swollen and often distorted, whereas in the norm 
plant the branches are thin and wiry. A section through the swollen 
part reveals the presence of female eelworms or their eggs. If the 
diseased patches are observed when quite small, dig up the plants 
and burn them on the spot when dry, taking care to remove the 
plants well beyond the zone of apparent injury. Then dress with 
sulphate of pepeat as previously advised. 
“Segeging” of oats, or “Tulip root,” is also caused 
Tylenchus devastatriz, The symptoms are the swollen appear- 
ance at the base of the culm, which bears a number of swollen 
distorted shoots. Diseased plants remain stunted and eelworms or 
their eggs will be found in the swollen parts. Deep ploughing. where 
allowable from other standpoints, and treatment b ate of 
potash are recommended for infected land, which acu not be 
sown with a crop susceptible to the disease such as clover. Barley 
or root crops are safe. 
Microscopic examination is necessary for the certain determina- 
tion of the presence of eelworm, as the base of the culm in oats is 
also swollen in a similar manner when attacked by the frit fly 
'( Oscinis frit). 
The same eelworm is the cause of a disease of the strawberry 
plant. The plants rot and decay at the ground level and the leaves 
are often crinkled and deformed at an early stage. Diseased plants 
should be removed and burned, and the land treated with sulphate 
of potash. 
Aphelenchus fragariae, Ritzema Bos. is the cause of a second 
disease of strawberry plants, known as the “cauliflower” disease, 
Diseased plants present a fasciated appearance, the stems and 
leaves being consolidated into an irregular fleshy mass, suggesting: 
