An Easy Grammar of Natural and Experimental Philosophy. For the Use in Schools. By David Blair, A.M [pseudonym].
Philadelphia: Published by Kimber & Conrad, 1811. Second American edition. A scientific work for young people that explores central forces and the center of gravity, mechanical powers, hydrostatics, hydraulics, pneumatics, optics, astronomy, electricity, etc. It also contains a question-and-answer section and a glossary. The first London edition was published in.....