16 
sincerely to be hoped that the above pest may not also be introduced. 
Some insects well known to American agriculturalists are treated of in 
relation to various plants. Among these are the Asparagus Beetle, 
which has been to some extent injurious in the Atlantic States, but 
which has not yet reached Canada. We have, however, the Cabbage 
Aphis, Corn Aphis. Hessian Fly, Mangold Leaf-blister Maggot, Onion 
Fly and Diamond-back Moth of the Turnip. Pea-weevils are men- 
tioned, but these are not the Bruchus pisi which occurs here, but 
beetles which belong to the genus Sitones (true Curculionids,) and 
which attack the foliage. Several pages of the report are devoted to 
the serious attacks upon tomato of the Heterodera radicola, a small 
nematode worm (such are popularly known as eel-worms,) which causes 
the growth of knots, or galls, on the roots of this plant, and on others, 
such as the cucumber, potato, parsnip, etc. This pest appears to be 
especially injurious to the crops grown under glass, and has caused 
great loss to some of the extensive growers. Several insect enemies of 
the turnip and cabbage are noticed, and considerable space is given to 
a discussion of the disease known as Finger-and-toe, the cause of which 
is the Slime Fungus, Plasmodiophora brassiae. This fungus is also 
injurious here, and has been treated by Mr. Fletcher jn his reports, as 
the Club-root of the Cabbage. Miss Ormerod's report is conveniently 
arranged under appropriate headings, and in connection with each in- 
festation the most suitable remedies are carefully considered. The 
mechanical part of the work is well in keeping with the contents, and, 
besides numerous wood-cuts of the various pests, there are four excel- 
lent photo-gravure plates, illustrating the root diseases to which refer- 
ence has been made. 
W. H. H. 
