A Natural Method of Physical Training. By EDWIN CHECKLEY, Brooklyn, W. C. Bryant & Co. 16Dagger. $1.50

1890 Science  
SCIENCE. tain branches or divisions and subdivisions of that science. Sonme of the more recent electrical works, therefore, are devoted to dynanmo-electric machines, for instance, or to secondary batteries, or to motors; while the electrical treatises of a few years ago,
doi:10.1126/science.ns-15.379.293 fatcat:he5acb35yzbntnmvavekuzrtgi