166 THE GRAPE. 



there is no reason why it should be invariably accepted to 

 the entire exclusion of any other. However, where the 

 disposition leads that way, and all the above-mentioned 

 considerations are not to be acquired, it will answer the 

 purpose, and if the slope be anything like steep, the whole 

 extent will have to be formed into terraces. This becomes 

 more or less expensive according to the angle of ascent. 

 It should also be remembered, that on a hill-side, the cold 

 air, more particularly in the night, is constantly moving 

 along the surface, from the top towards the bottom, there- 

 by preventing that health-producing evaporation of warmth 

 from the soil which is obtained from the solar heat of the 

 previous day, and causing, in our extreme climate, a con- 

 densation of the moisture as it radiates upwards, which is 

 then carried along towards the lowest level in the form 

 of a damp and cold draft among the under parts of the 

 plants ; and it does not require a second thought to under- 

 stand how injurious such a circumstance is in all other 

 kinds of culture. No doubt many will think that such 

 notions as these are not worthy of consideration, but as 

 we are being troubled with rot, mildew, and other hurtful 

 affections, it is well to guard against all things that are 

 likely to provoke, or produce the evil, and avoid them 

 accordingly. Arguing from the culture of the grape- 

 vine, or any other plant under glass, we know that such 

 action would bring on these very diseases; and it is not to 

 inside cultivation alone that we are at all times dependent 

 for proof, for there now and then happens an example 

 where a plant is trained on two aspects, or the head is in 

 different positions, when one part is quite free from disease, 

 while the other is badly affected ; and it is just possible 

 that these cold currents of damp air is one of the causes 

 of mischief. 



To prepare a side-hill for a vineyard, it will be requisite 



