Subject ASC000008j
The Intellectual observer.
v.1 (1862), Page 12 (1862)
Harvard University, MCZ, Ernst Mayr Library
BHL Page 39473828
Keywords
work horsepower motive power animal power work efficiency transportation physics movement animals pounds in weight mean effort in pounds mean speed per second pounds per second effect prime movers horse power mule ox animal power #Power pounds table work per day estimation horse ox ass man power energy strength power of animals human draught-horse pounds weight mean effort mean speed comparative