1142 Marvels cf the Universe 
leaflet is also somewhat thickened and blistered. The pod or pouch thus formed is often tinted 
red or brown at maturity. The larve are yellowish red. 
A mite, to which the name Eriophyes rose has been given provisionally, appears to be the in- 
fluencing factor in the production of curious nodular excrescences attaining the size of a small walnut 
occasionally seen on stems of the Trailing Rose. The swellings arise at the nodes, are persistent, and 
grow very slowly. 
A minute parasitic fungus, Coniothyrium fiickelii, attacks the stems of various wild roses, 
causing them to become swollen and rugged at the point of infection, producing a condition akin to 
that popularly known as “ canker.’”’ It also occurs on cultivated roses. 
I am not aware of any European records of galls on the roots of wild and other roses. A gall- 
wasp, Rhodites radicum, oviposits in the roots of wild roses in North America; the gall which 
results is globular, about two inches in diameter, smooth and reddish-brown. To those in search 
of a hobby which will demand inquiry in many of Nature’s by-paths, and at the same time allow 
the student to get together an interesting collection which will probably escape condemnation 
by Nature protectionists, I can cordially recommend the study of galls. 
ial le S13 Ae WOW Se, 
BY JOHN J. WARD, F.E.S. 
THERE is no mouse which inhabits the sea-depths; indeed, the Sea-mouse is really a sea-worm. 
Probably the word “mouse” has been incorporated in its popular name on account of its furry 
APOWLL Ti ntband se, gg tn 
tee 
ie 
Photo by] (J. J. Ward. 
THE SEA-MOUSE. 
A view of the Sea-mouse on edge in the act of turning over. Here the bright silky hairs along the sides are better 
displayed. Among them are dark-coloured bristles which contain a harpoon for defensive purposes. 
