The removal of lime from the ash of cow feces
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While employed in the Government Dairy Research Laboratories at Columbia, Missouri, the writer had occasion to conduct the analytical work in a mineral nutrition experiment conducted on dairy cattle. The principal constituent fed (and the one with which this paper is to deal) was lime. Rations high and low in lime were fed and the milk, urine and feces were analyzed to determine the calcium eliminated. It was in the analysis of the feces-ash that the trouble was experienced that prompted the following investigation.