[69] The total horse-power used in mechanical industries is obtained by adding 650,000, the estimated total of horse-power in hydraulic installations given in an article in the Annales de géographie for January 1904, to the total steam-power in fixed engines officially given for 1903, and accordingly excludes gas and other engines not driven by steam- or water-power.
[70] The proportion estimated in the official publication entitled Sweden: its People and its Industry, edited by G. Sundbärg (Stockholm, 1904).
[71] Including the installations returned in the Swiss industrial censuses as electric, most if not all of which are probably driven by water-power.
[72] See bibliography at the end of the article.
[73] See on the whole subject Hovelacque’s Science of Language, Latham’s Nationalities of Europe, and the same author’s Philology.
[74] Taken from a paper by Professor Voeikov on “Verteilung der Bevölkerung auf der Erde unter dem Einfluss der Naturverhältnisse und der menschlichen Tatigkeit,” in Petermanns Mitteil. (1906), p. 249, where corresponding figures are given for other parts of the world.
[75] Kaluga, Smolensk, Tver, Moscow, Yaroslav, Kostromer and Vladimir.
[76] Kursk, Orel, Tula, Ryazan, Tambov, Voronezh and Penza.
[77] Nizhniy Novgorod, Kazan, Simbirsk, Samara, Saratov and Astrakhan.
[78] Bessarabia, Kherson, Taurida, Ekaterinoslav and Don Province.