174 On the Composition and Nutritive Properties of Swedes, 
The fourth experimental swede was pulled up on the 28th 
of May. Before planting on the 19th of March, it weighed 
2 lbs. 14£ ounces. When taken up on the 28th of May, the 
bulb weighed 2 lbs. 11 ounces, and the tops 9| ounces. 
The composition of the bulb and tops on the 28th of May, 
was as follows : — - 
Composition of Swede on the 28th of May. 
Water 
* Albuminous compounds 
Non-nitrogenous organic compounds 
Mineral matter (ash) 
* Containing nitrogen 
Bulb. | Tops. 
04-00 
80 
20 
•75 
2 
81 
4-58 
15 
40 
•67 
1 
59 
120-00 
100 
00 
•12 
•45 
Before planting, the swede is assumed to contain : — 
Grains. 
Dry organic matter 1901 
Nitrogen in this 50*5 
Mineral matter (ash) .. ..' 122 
When removed from the soil on the 28th of May, I 
found : — 
Dry organic matter 
Nitrogen in this 
Mineral matter (ash) 
Total dry organic matter in bulb and tops 
„ nitrogen ., „ 
,, mineral matter „ ,, 
In Bulb. 
Grains. 
1003 
22-5 
12G 
In Tops. 
Grains. 
737 
18-2 
64 
Grains. 
1740 
40-7 
190 
In the fourth period of growth, the root lost 898 grains of 
dry organic matter, and in it 28 grains of nitrogen, which 
passed into the tops. 
It will be noticed that at the termination of the fourth period 
the bulb was very watery, whilst the tops contained nearly 20 
per cent, of dry matter and only 80 per cent, of water. 
The fifth swede was allowed to grow until the 4th of July, 
when it was taken up, weighed, and analysed. 
Before planting on the 19th of March, the bulb weighed 
