The revenue in the Italian financial year 1905-1906 (July I, 1905 to June 30, 1906) was 102,486,108, and the expenditure 99,945,253, or, subtracting the partite di giro, 99,684,121 and 97,143,266, leaving a surplus of 2,54o,855.f The surplus was made up by contributions from every branch of the effective revenue, except the contributions and repayments from local authorities.
The thermal effect of the " alcohol " group C. OH may be determined by finding the heat of formation of the alcohol and subtracting the thermal effects of the remaining linkages in the molecule.
By subtracting the value for CH 2, which may be derived from two substances belonging to the same homologous series, from the molecular refraction of methane, CH 4, the value of hydrogen is obtained; subtracting this from CH 2, the value of carbon is determined.
Hydroxylic oxygen is obtained by subtracting the molecular refractions of acetic acid and acetaldehyde.
It is true that we obtain this result by subtracting 3 from io by means of a subtractiontable (concrete or ideal); but this table merely gives the generalized results of a number of operations of addition or subtraction performed with concrete units.
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