29 



more than an acre of bean stubble, instantly ploughed 

 it in and dibbled wheat upon it. 



" On the 6th of October I then salted the adjoin- 

 l;md with three bushels per acre, manured it 

 with fifteen loads of farm yard dung per acre, and 

 dibbled it with wheat on the 15th of November, 

 The result was that the sea-weeded portion gave 

 three times the produce of any equal part of the 

 field." Farmer s Encyclopedia, p. 82. 



How did it happen that this green manure pro- 

 duced three times as much w r beat as the dung from 

 the barnyard. Certainly the nitrogen in this weed 

 was available. It could not be otherwise. And it 

 is very probable it was much more so than that in 

 the yard manure. 



Now comes the interesting question In what con- 

 dition does nitrogen exist in sea-weed ? In the form 

 albuminoids, there is not a shadow of doubt. Just 

 as we find it in clover, in Hungarian grass and in all 

 vegetation. And we have the authority of Boussin- 

 gault that there is less nitrogen in sea-weed than in 

 clover. And we know there is less phosphoric acid 

 and less potash in the former than in the latter 

 plant. 



Then would not the same amount of clover, or 

 Hungafiian grass, with salt have brought the same 

 result ? 



And what a vast difference in the cost of these 

 planis. All the Doctor could get would only cover 

 a little more than an acre. To obtain any more of 

 it, he would have to buy it. What it would cost in 

 England we do not know. In this country it is 

 about the price of good manure. 



