326 APPENDIX II. 



height,* by dividing this number by 17 inches (the distance of 

 the cordons from each other), we obtain just six inches. The 

 first cordon being established at 15 inches from the ground, 

 we shall then be able to place upon oar wall five cordons. 



As to the distance to be preserved between the stocks, that 

 is necessarily determined first, by the length to which the 

 two arms are to be allowed to grow ; and secondly, by the 

 number of cordons one above the other. Let us suppose this 

 number to be five, and the total length of the two arms to be 

 8 ft. 10 in. To know the distance sought, divide the total length 

 by the number of cordons : we obtain 20.12 inches, which we 

 have adopted for our figure. At Thomery, where the cordons 

 have only a length of 88.8 inches ; the stocks are planted at 

 internals of seventeen inches. It might happen that the wall 

 for the trellis might be less than 8| feet in height, and that the 

 number of cordons being reduced from five to three, the dis 

 tance between the stocks will then be 33.99 inches. But an 

 interval so great exposes the trellis to a degree of growth 

 prejudicial to the ripening of the grape ; in that case it 

 would be better to diminish the length of the cordons from 8 1 

 to 5.87 feet, and the distance between the stocks will then be 

 19.76 inches. It may also be that the wall will be more than 

 8,7 feet in height, and in order to increase the number of cor 

 dons it becomes necessary to place the stock at less than 20.12 

 inches; for example, to 9.88 inches if the wall affords space 

 for ten cordons. Should this distance be too small to allow the 

 roots to draw from the earth the sustenance necessary for the 

 support of ten cordons, in order to remedy this inconvenience 

 the length of the cordons is slightly increased for a trellis of 

 ten cordons to from 103.08 inches to 62 inches, the stocks 

 remaining at the distance of 15 inches from each other. How 

 ever, as this increased length of the cordons has an unfavorable 



* M. Du 13reuil has had his drawings made to an accurate scale, but although 

 our figures are exact transfers from his cuts, the relations of the French and 

 English measures is such as to preclude our giving a useful scale in English feet. 

 The same reason has obliged us to introduce numerous fractions a feature whicb 

 we did not feel at liberty to avoid by violating the accuracy of the translation. 



