Manual of Instruction in Hard Soldering

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. In our age, in construction of forms in metal, heat is indis pensable. The fundamental processes of casting, anneal ing, welding and soldering metals underly the other arts and depend upon scientific research for improvement. The products of these arts, as shown in the tools of the artisan, instruments of the surgeon, engineer, astronomer, and the apparatus of the chemist, add to the facilities for investigating the laws of nature, a knowledge of which in turn enables the maker of implements and manipulator of processes to also improve.