Science

THE addresses which have been collected for the first time in this volume and which were delivered in the main as summaries of my own special investigations concern themselves with the application of physical chemistry to different fields in medicine as rendered possible, more particularly through advances in the physics and chemistry, of organic colloids. In that questions in physiology as well as pathology and pharmacology are touched upon, it may perhaps be hoped that different circles of medical men may be interested in the problems discussed in this volume.

Birth control, Mrs. Sanger claims, and claims rightly, to be a question of fundamental importance at the present time. I do not know how far one is justified in calling it the pivot or the corner-stone of a progressive civilization. These terms involve a criticism of metaphors that may take us far away from the question in hand. Birth Control is no new thing in human experience, and it has been practised in societies of the most various types and fortunes.

Excellent book and reference for those considering developing the compressor-less air conditioning and refrigeration used in the days before electricity was available throughout the nation.

Written in 1922, the author predicted the supply and costs of gas and other petroleum products was not to be infinite. He advocated and taught that we should be using alcohol to preserve and have substitutes available. Great reference work for those considering making their own alcohol based fuels.

For those enthusiasts that really want to reduce their carbon footprint, compressor-less ammonia air conditioning may be the key. Ice making houses existed BEFORE electricity and electric refrigerators. These old reprints give the practical applications that make it work.

Forty years have scarcely elapsed since scientific men first began to attribute to the human race an antiquity more remote than that which is assigned to them by history and tradition. Down to a comparatively recent time, the appearance of primitive man was not dated back beyond a period of 6000 to 7000 years.

"The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light." Matthew 6:22 - Scientists have take their electronic single eyes and begun hunting for life beyond our planet.