. The Canadian horticulturist. Fruit Growers' Association of Ontario; Fruit-culture. 172 THE CANADIAN HORTICULTURISf. THE GRAPE-VINE GALL LOUSE (Philloxera Vastatrix.) During the present season a number of packages have been received containing grape-vine leaves infested with the Gall Louse, accompanied with letters of enquiry as to the cause of this strange appearance, and whether it betokens serious consequences to the grape vines. From the number of tries'3 enquiries, we are led to believe that there may be a number of our readers who would be interested in ah account of this insect^ for it
. The Canadian horticulturist. Fruit Growers' Association of Ontario; Fruit-culture. 172 THE CANADIAN HORTICULTURISf. THE GRAPE-VINE GALL LOUSE (Philloxera Vastatrix.) During the present season a number of packages have been received containing grape-vine leaves infested with the Gall Louse, accompanied with letters of enquiry as to the cause of this strange appearance, and whether it betokens serious consequences to the grape vines. From the number of tries'3 enquiries, we are led to believe that there may be a number of our readers who would be interested in ah account of this insect^ for it seems to be on the increase, and may appear next season in vineyards where it has not hitherto been observed. ,The accompanying en- graving, fig. 11, represents the under side of a leaf covered with the' galls, which are fleshy cup-shaped, sometimes purse- shaped swellings, wrinkled and hairy; while the upper" side of the leaf shews corresponding depressions, which look like Fig. 11. minute cups, having their rims so drawn together as to form small, fuzzy, fimbriated mouths, opening into the cups below. A section Of one of these cups is shewn in fig. 12, at d, considerably magnified, so that the opening on the upper side of the leaf, surrounded and guarded by minute hairs, can be distinctly seen, the dark part below representing the form and position of the cup, with its fleshy walls covered with hairs. These galls may be. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Fruit Growers' Association of Ontario. St. Catherines [Ont. ] : Fruit Growers' Association of Ontario
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Keywords: ., bookaut, bookcentury1800, bookdecade1870, booksubjectfruitculture
