Annual Report on Adulterations, Sfc. 239 
6. In addition to the usual analytical work for members of the 
Society, and the investigation to which reference has been made 
in the preceding observations, the following experiments were 
carried on by me during the past season : — 
1. On Milk and Dairy-management : — ■ 
On this subject, and on the composition of annatto, papers, 
embodying the results of my investigations, appeared in the last 
number of the Journal. 
2. On the Solubility of Phosphatic Materials in Water and 
Saline Liquids : — 
The results of this investigation are ready for publication, 
and will form the subject of a paper in a future number of the 
Journal. 
3. On the means of preserving and rendering more efficient 
the Fertilizing Constituents of Peruvian Guano : — 
A paper on the subject will be found in the present number of 
the Journal. 
4. Experiments with Nitrate of Soda on the Wheat-crop : — 
The results of these experiments fully confirm the favourable 
opinions which I expressed in former communications of nitrate 
of soda, when judiciously used as a top-dressing for wheat. 
Thus, in one experiment, the produce of the land not top-dressed 
was 38J bushels of wheat, and that of land top-dressed, at the 
rate of 2 cwt. of nitrate of soda and 4 cwt. of salt per acre, was 
49£ bushels. 
The application of nitrate of soda, in conformity with the 
results obtained in previous years, increased the yield of both 
grain and straw. 
5. Experiments with Salt on Mangold ; Swedes and Turnips ; 
Wheat : — 
The crop of Swedes and turnips were such failures that no 
satisfactory conclusion can be drawn from the experiments. In 
the Mangold crop, when grown on heavy land, no effect was 
observable, but on light sandy soil, a beneficial result followed 
from the use of salt. Applied to wheat, it decidedly checked 
the development of the leaf and stem ; but whilst less straw was 
obtained from land so top-dressed, the yield of grain was neither 
diminished nor increased. 
Augustus Voelcker. 
12, Hanover Square, London, 
December, 1863. 
Analyses 
