Jus trium Liberorum among the Romans. But especially, by an effectual Care to provide for the Subsistence of the Poor, by finding them Employments, whereby they may earn their Bread, without being chargeable to the Publick.
A Discourse concerning Gravity , and its Properties, wherein the Descent of Heavy Bodies , and the Motion of Projects is briefly, but fully handled: Together with the Solution of a Problem of great Use in Gunnery . By E. Halley .
NATURE, amidst the great Variety of Problems, wherewith She exercises the Wits of Philosophical Men, scarce affords any one wherein the Effect is more visible, and the Cause more concealed, than in those of the Phænomena of Gravity. Before we can go alone, we must learn to defend our selves from the Violence of its Impulse, by not trusting the Center of Gravity of our Bodies beyond our reach; and yet the acutest Philosophers, and the subtilest Enquirers into the Original of this Motion, have been so far from satisfying their Readers, that they themselves seem little to have understood the Consequences of their own Hypotheses.
Des Cartes his Notion, I must needs confess to be to me incomprehensible, while he will have the Particles of his Cœlestial Matter