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| | |
| | SAMPLES. |
| |____________________________________________|
| | | | | | |
| | A. | B. | C. | D. | E. |
| Ignition-point |175° C. |170° C. |152° C. |121° C. |155° C. |
| Stability |Stable |Stable |Unstable|Unstable|Unstable|
| Per cent. of N. | 11.02 | 10.54 | 12.87 | 12.59 | 13.52 |
| 96 per cent. alcohol| Sol. | Sol. | Insol. | Insol. | Insol. |
| Ether | Insol. | Insol. | Insol. | Insol. | Insol. |
| Ether-alcohol | Sol. | Sol. | Sol. | Sol. | Sol. |
| Acetic Ether | Sol. | Sol. | Sol. | Sol. | Sol. |
|_____________________|________|________|________|________|________|

These samples were prepared as follows:--

A. From 1 part nitric acid and 2 parts sulphuric acid (containing 70 per
cent. H_{2}O).
B. From 1 part nitric acid and water.
C. From 1 part nitric and 3 parts H_{2}SO_{4} (con.).
D. From 1 part nitric and 3.5 parts con. H_{2}SO_{4}.
E. From 1 part nitric and 3 parts con. H_{2}SO_{4}.

Dr Mühlhäusen is of opinion that these compounds may be turned to
practical account in the production of good smokeless powder. He
recommends the following proportions and method. Six grms. of nitro-jute
and 2 grms. of nitro-starch are mixed together, and moistened with acetic
ether. These ingredients are then worked together into a uniform mass, and