In the first category there are two varieties: - (T) A mixture of ioo litres of spirit and 22 litres of a mixture of 4 parts of wood-naphtha and 1 of pyridine bases; this spirit, the use of which is practically limited to heating and lighting purposes, may be mixed with 50 grs.
In an experiment on 3500 grams of paraffin produced from shale (melting point 44'5° C.) they obtained nearly 4 litres of liquid hydrocarbons, which they subjected to fractional distillation, and on examining the fraction distilling below loo° C., they found it to consist mainly of olefines.
Thus in the case of cyanacetic acid, while the volume V changed by doubling from 16 to 1024 litres, the values of k were 0.00 (37 6, 373, 374, 361, 362, 361, 368).
(a) What would be the dimensions of a cubical vessel which would exactly hold 125 litres; a litre being a cubic decimetre ?
(2) A mixture of loo litres of spirit, 14 litres of the naphtha-pyridine mixture described above, 4 litre of methyl violet solution, and from 2 to 20 litres of benzol; this fluid is limited to combustion in motors and agricultural engines.
The "general" mixture consists of Too litres of spirit, and 5 litres of wood spirit or 2 litre of pyridine.
These consist of ioo litres of spirit mixed with either ro litres of sulphuric ether, or r litre of benzol, or 2 litre of turpentine, or ï¿½025 litre of animal oil.
In France, the general denaturizing agent is wood-spirit of at least 58 over-proof, and containing 25% of acetone and 2.5% of "impurites pyrogenees"; 10 litres of this spirit denaturizes Too litres of alcohol.
All these sources are estimated to yield about 220 to 230 litres per head.
With metric units, measuring P in kg., and C in litres, the G.D.
20 litres; 10 litres or decalitre; 5, 2, 1, 0.5, 0.2, 0.1 (decilitre); 0.05, 0.02, 0.01 (centilitre); 0.005, 0.002, 0.001 (millilitre) litres
This may consist of a glass sphere of 50 litres' capacity, into the neck of which, presented downwards, the necessary tubes are fitted.
The whole of the interior surface is washed with a fountain of alkali, kept in circulation by means of a small centrifugal pump. In this apparatus, and with about one horse-power utilized at the transformer, the absorption of gas is 21 litres per hour ("The Oxidation of Nitrogen Gas," Trans.
P. 543), as has also aluminium turnings moistened with potassium cyanide and mercuric chloride, which decomposes water regularly at 70°, i gram giving 1.3 litres of gas (Mauricheau-Beaupre, Comptes rendus, 1908, 147, p. 310).