Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 55
y, andenables us to stand more securely.In every movement of the body, a man adjusts his position unconsciously,in such a way as to support the center of gravity, and cause the line of di-rection to fall within the base. Why does a ^ person carrying a load upon his back, bends forward in fnga load…
Physics · Science · Technology
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from XIXe [i.e. Dix-neuvième] siècle (en France); classes - moeurs - usages - costumes - inventions. Ouvrage illustré d'un front. chromotypographique, de 16 planches coloriées aux patrons, de 36 entetes et lettres ornées et de 487 gravures (dont 24 tirées hors texte) d'après les principaux artistes du siècle (1893)](https://img.insideoutlibrary.com/img/200/ia-xixeiedixneuvi00granuoft-503-355.webp)
