IN the eighty or so pages of this little book Mr. Morgan gives the result of certain experiments by others and himself to determine the nature of electric spark ignition in internal-combustion engines ...

COMMANDER LIND addresses his preface from the United States Naval Academy at Annapolis, and the book doubtless represents the instruction there given on the subject of the internal-combustion engine.

Recent improvements in the energy efficiency of fuelwood cook-stoves have resulted from the application of principles of combustion and heat transfer, standardized testing, advanced production ...