57 
to be enriched in nitrogen, so that they save the cost of supplying 
nitrogen in the manure. This effect is shown in the following 
illustration, which is engraved from a photograph taken by 
Professor Dr. Wagner, of Darmstadt, in Germany. The illustra- 
tion speaks for itself, and needs no explanation. 
Manured — with Manured with phos- Manured with Manured with phos- 
phosphoric acid phoric acid, potash, phosphoric acid _ phoric acid and pot- 
and potash. and nitrogen; the and potash. In ash. In the previous 
nitrogen ao the previous season vetches were 
as nitrate of soda. season mustard grown in these pots 
was grown in and afterwards dug 
these pots and in as green manur- 
afterwards dug ing. 
in as green 
manuring. 
Suppose then that we adopt this plan of green manuring with 
peas or beans, we need only manure the ground with superphos- 
phate and potash salt, sow the peas or beans, and plough them in 
at blossoming time. Our expenses would then run as follows:— 
12 cwt. concentrated superphosphate at 13s. 43d., £1 38s. 5d.; 
14 ewt. potash salt, at 12s., 13s. 6d.; peas or bean seed, 4s.; total, 
£2 0s. lld. This is one of the cheapest and most beneficial 
methods of manuring the soil, and is especially to be recom- 
mended at distances from Melbourne, where the freight on manure 
is heavy. 
On the whole, it may be said that manure prices in Victoria 
are low as compared with other countries, and the wide-awake 
cultivator who looks well into the manure market can make some 
very advantageous purchases. This cheapness of manure is not 
owing to the great quantity of manure in the market, but to the 
small demand for it. A great deal of manure is exported from 
Victoria ; it may be that more is exported than is used within the 
colony. This is not because Victorian soils do not need manure. 
‘There is no country in the world that is covered with rich first- 
class soils. The majority of soils in all extensive countries are 
