35 2 Appendix. 



an apparatus for applying a gas to orange and other trees, 

 which it is claimed will kill all scale-bugs without injuring 

 the tree. A tent is constructed over the tree, and the gas is 

 generated in the tent. Many are of opinion that the 

 destruction worked by the white-scale bug and other pests 

 is due to the fact that fertilizers not having been used, the 

 soil is becoming impoverished. The fact that a 250 acre 

 orange-grove at San Gabriel, which for some years has been 

 fertilized, is free of scale-bugs and other pests, seems to 

 indicate that the true remedy is good husbandry." 



No. 65. 

 Trifacial Orange. 



In Lindley's " Theory and Practice of Gardening," 2nd 

 edition, p. 359, the following occurs : 



Rev. G. C. Renouard, writing to the Gardeners' Chronicle 

 in 1841, when residing in Smyrna received a fruit which 

 was said to be from an orange tree grafted on a lemon tree. 

 4t It was of the size of a large orange, with two or three 

 patches of lemon neatly stuck on it, the colour, almost to 

 the very edges of the different pieces, being distinctly that 

 of the respective fruits ; and, on removing the rind, which, 

 as in a common orange, was all of one piece, the portions 

 beneath the lemon-coloured parts had not only a consider- 

 able degree of acidity, while the orange had its proper 

 degree of sweetness, but they were separated from their 

 sweet neighbours by a distinct membrane, which in some 

 degree accounted for their difference in taste. The pulp 

 was also, I believe, of a lighter hue. The patches of 

 lemon were merely superficial, and of no great thickness. 

 They made bumps, or irregular elevations, on the rind of 

 the fruit." 



The Gardeners' Chronicle of the 22nd September, 1855, p. 

 628, also mentions this so called Trifacial orange, and gives 

 the mode of producing it artificially on the authority of Mr. 

 St. John, who gives it on the authority of Boghas Joussuff, 



