The cause and control of sex in human offspring.

  • Jackson, R. Clay.
Date:
1926
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: The cause and control of sex in human offspring. Source: Wellcome Collection.

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    The Cause and Control of Sex 161 369. Rural Butler county in 1914 produced a male sex ra'tio of 1.228, and the city of Butler produced a male sex ratio of 1.069. The total number of male em¬ ployees in the industries of Butler county was 5,054. The total of females employed was 204. The number of males engaged in coal mining was about 1,500. There was no coke production for 1914. Of the 5,054 male em¬ ployees cited, 716 worked out of doors in minor pursuits, while 4,338 worked indoors. To summarize: 1,500 (men in mines or units for male sex pro¬ duction) 4,338 (men employed indoors or units for male sex production) 5,838 (total units of value for male sex production) as contrasted to a total of 920 (total units of value for female sex production) These latter were subdivided into 716 men employed out of doors and 204 women employed at definite indoor in¬ dustries. 1.07 is a very frequent male sex ratio for cities and manufacturing activities and the city of Butler at 1.069 is a very close approach. The heavy ratio of 1.228 for the countryside is due to coal mining beyond ques¬ tion. 370. Cambria county, (rural section), produced in 1914 in births, 1,376 males and 1,206 females; this makes a ratio of 1.14 in favor of males. The city of Johnstown produced 1,119 males and 1,075 females, creating a male sex ratio of 1.04. East Conemaugh pro¬ duced 134 males and 116 females, which makes a male sex ratio of 1.155. Totalling these figures for rural Cambria county and for the two cities a male sex ratio of 1.099 is the general result. Employed in the business and industry of Cambria county were totals of 32,292 males and 764 females. There were also 23,300 males employed in the coal mines. There were 820,000 tons of coke produced in 1914 and I consider this as involving outdoor labor on the part of about 1,600 men. Of the 32,292 males employed in business and industry, 29,683