Physics.
Enfield, W. Institutes of natural philosophy. (Continued, Lie Same. list Amer. from 2d London ed. With cor- rections and appendix, by S. Webber. Boston. Thomas & Ae 1802, xvi, 428, 20 pp. Folded sheets. *3961.60 **E£,161.6 Same. With some corrections; change in the order of branches; and an appendix to the astronomical part, selected from Ewing's (Continued )