THE PLANTS AND GARDENS OF THE CANARY ISLANDS. 97 
understand the nature of the disease and the treatment required. 
The Bordeaux mixture, consisting of copper sulphate and fresh 
Hmc, is undoubtedly a specific if applied at the right time and 
repeated two or three times before the plants are in flower. The 
Strawsons' Co., Ltd., supply a knapsack machine for applying 
the mixture. This will dress one acre per day. If Tomato- 
growing is to be maintained as a leading industry in the 
Canaries, the treatment of the disease must receive serious and 
early attention. 
Potatos. — In the lowlands Potatos are planted in irrigable 
soils, and the first crops come in early in January. The seed 
Potatos, generally " Magnum Bonum," are received in October 
and November. The whole Potato is planted, and the manure used 
is chiefly artificial. The return in good years is six- to eight-fold. 
The Potato disease is prevalent, and the Bordeaux mixture as 
recommended for Tomatos should be regularly tried. The 
Canary Potatos received in this country are excellent, and sell 
readily up to the end of May. In 1893 there were exported 
15,101 cases. In the first half of 1894 the exports were 32,600 
cases. The total exports for Grand Canary and Teneriffe would 
be about 50,000 cases yearly. A very hardy and prolific Potato, 
of small size, grown for local consumption is known as the 
wcra." It is said to yield fourteen- to thirty-fold (Samler Broion). 
It is almost proof against the disease, and it may be regarded as 
an acclimatised sort — a survival of former importations thoroughly 
adapted to in the islands. 
Grapes and Wine. — Vines are grown on slopes above the zone 
devoted to the cultivation of Bananas and Tomatos. The land is 
not irrigated, and the fruit is chiefly made into wine. *' The grapes 
grown are the Tentillo and the Negra Molle, both black ; the 
Moscatel, black and white ; the Verdelho, Pedro Jimenez, 
Forastero, and Vija-riega, all white." There is a revival of Grape- 
growing for wine purposes, and it is possible that Ked Canary 
and other wines will come into popular demand in this country 
in the place of cheap clarets. The vine mildew is kept in check 
by means of sulphur. The White Lupin is grown in the winter, 
and dug in as a green dressing in the spring. The phylloxera 
is said not to be present in the Canaries {Sander Brown). 
Cochineal. — Although this industry is greatly reduced of late 
years, the exports are still of the annual value of about £50,000. 
H 
