216 : UNIVERSITY OF COLORADO STUDIES 
centage of increase in the number of farms has invariably exceeded that 
of the number of males engaged in agriculture. While this does not 
prove that farms are not increasing in size, it is a strong indication of it. 
It may be that the next census will show a lower percentage of increase 
in number of farms, and a higher percentage of increase in males engaged 
in agriculture owing to more intensive cultivation. To raise such crops 
as sugar-beets requires a large number of laborers. 
However, if the profits in raising beets continue, there can be no 
doubt that farms will tend to increase in size. This has always been the 
rule in all countries. Wherever an industry yields extraordinary profits 
it ultimately passes into the hands of the wealthy classes. The elimina- 
tion of the small farmer in England as a consequence of the increased 
profits of agriculture due to the introduction of the turnip and deep root 
grasses is a case in point. 
MANUFACTURE 
The table shows a great increase in the number of persons in this 
industry. The percentage of the total population engaged in manu- 
facture shows a steady increase since 1870, but the percentage of increase 
of wage-earners in manufacture shows a continuous decline since the 
decade from 1870 to 1880. The following table illustrates this: 
1870 1880 1890 Igoo* 
Percentage of total population engaged in 
PATINEACEULEL )e\.'s 15 4 os lslcrous sist vie sieiel cla 22 2.6 3.6 4.6 
Percentage of increase of wage-earners in 
IMANUIACEUTE Reese sets ss we kes! wierslecas erate 479.2 195-9 64.7 
* Census, 1900, Manufactures, Pt. II, p. 61. 
The figures seem to show a great increase in manufacturing between 
1870 and 1880. ‘This resulted from the advent of the railroad perhaps to 
a slight extent, and also from the fact that a great impetus was given to 
mining by the Leadville developments of the period from 1877 to 1880. 
There was much demand for iron work in connection with mining, and 
much of this work was of necessity of a local character. This is shown 
by the increase of mechanics from 128 to 615 and blacksmiths from 232 
to 1,295. Engineers exceeded 1,000 in 1880, and wage-earners in manu- 
