14 



ward set so that they may not run inwardly to interfere with the growth 

 of the vines or other produce being raised in the plots surrounded by the 

 eucalypti. During the first year or two the young eucalypti plants should 

 be protected from extreme heat and cold by the agency of light rough 

 sapling frames over which any cheap, coarse calico fabric may be secured. 

 They should also be occasionally examined and certain caterpillars, which 

 frequently lodge under carefully folded leaves, picked off and destroyed. 

 Liquid manure applied round their butts will lead to a vigorous growth. 

 As the plants mature all necessity for special attention decreases, but the 

 shading bark should be carefully removed and the trees lopped at an al- 

 titude of sixty or eighty feet. Then the work of protection is completed. 

 And it may be added that the vineyardist who will carefully follow the 

 foregoing instructions and raise fringes and belts of eucalypti trees a'.ound 

 and through his property, as directed, need not long fear the ravages of 

 phylloxera or other voracious pests, as within a short time his estate will 

 become for quite thirty feet round and beyond its boundaries absolutely 

 exempt from such insects as may have previously infested it including 

 locust invasions, and the more reckless who will occasionally venture with- 

 in the invisible boundary line extending over the tree tops will drop dead 

 before reaching the coveted plants. 



It will be understood that the spaces intervening between the fringes 

 and belts of eucalypti and the vines may be utilized for raising beet roots, 

 tomatoes, and other vegetables, which will grow luxuriantly on at least 

 eight feet of said space, so there is no occasion to fear any waste of ground 

 resulting from the adoption of the plan and mode of culture now proposed. 

 It will be seen also that what has been said regarding the protection of 

 vineyards, applies with equal force to orchards and other cultivated lands, 

 with only such changes as difference of culture will naturally suggest. 



Having shown how cultivated grounds may be rendered free from insect 

 pests and afterwards permanently kept exempt from such by growing 

 round and across them eucalypti fringes and belts that will act like so 

 many walls and partitions to repel and prevent the attacks of all parasiti- 

 cal pests, there remains to be explained how infected plants may be rid of 

 the disease affecting them, how others may be preserved in a healthy con- 

 dition until such time as the protecting fringes and belts shall have come 

 to maturity, and how the weak ones may at any time be reanimated and 

 strengthened. As already pointed out, the purifying, preservatory, vital- 

 izing and invigorating agent relied on to do this is electricity, with or with- 

 out the aid of a chemical emulsion. 



As to the apparatus required for conveying an electric current to the plants 

 and charging them with electricity, none, it is thought, will answer the 

 purpose better than the simple appliance illustrated in the accompanying 

 drawing and which merely consists of one or more batteries D with cop- 

 per wires E E\ attached, respectively, to their positive and negative poles. 

 By preference, the wire E leading from the battery or batteries is insulated 

 by means of an india rubber tube F and passed through the crotch of the 

 vines or other plants to be electrified or suspended therefrom, at about 

 one foot from the ground. Thence it descends through the ground, E 

 about the top of the roots where it is attached to the bare return wire E, 1 

 which is connected by loops or short lengths, as at A t with the trunks of 

 the various plants. The upper wire may be arranged and connected with 

 the plants in the same manner as the lower one, if desired. Both wires 

 may also be connected by separate wires running along the stem of any 

 Tine or other plant, to intensify the action of the electric current, when- 



