Supporting the Vine. 175 



An area of one hectare (equal to two and five-elev- 

 enths acres), having a side of three hundred and twenty- 

 five feet, and planted at the rate of 20,000 plants, laid 

 out as shown at page 100, will admit of one hundred 

 rows of plants. This number of rows multiplied by- 

 one hundred and fifty-six, gives a total expenditure of 

 one hundred and fifty-six dollars per hectare, or sixty- 

 two dollars and forty cents per acre, of which sixteen 

 dollars will be for the stakes. 



The duration of the wires may be reasonably laid down at forty 



years, or $46.40 divided by forty., $l 16 



The duration of the sulphated wood will be at least twenty-five 



years, or sixteen dollars divided by twenty-five o 64 



Interest, at five per cent, on the pVce of the stakes, while they 

 last, will be twenty dollars, which, divided by twenty-five, gives, 

 per year o 8d 



Interest, at five per cent., on the cost of the wires, while they last, 



equal to $92.80, which, divided by forty years, gives 2 32 



in all $4 92 



The same surface, staked, costs 8 45 



Difference...... $3 53 



There is, therefore, by the use of wires, a yearly sav- 

 ing of three dollars and fifty-three cents. 



It must be added that we have supposed the lines of 

 wire to be three hundred and twenty-five feet in length 

 (side of a hectare), but were these lines half as long 

 again, the cost, as far as regards the stays, would be one 

 half less, inasmuch as two only would be required, 

 where four were needed in the former case. 



We have seen that in the vineyards of Champagne, 

 the annual cost of staking is about thirty-three dollars 

 and sixty-six cents per acre. If the mode of culture and 

 pruning shown at pige 100, and Figure 35, be adopted, 



