Gale's cabinet of knowledge [electronic resource] : or miscellaneous recreations. Containing moral and philosophical essays, propositions, natural and metaphysical maxims. And Observations on select subjects of general Utility. With a series of easy, entertaining, and interesting mechanical, magnetical, and magical experiments. Including the most celebrated card deceptions ever exhibited. together with about seven hundred serious, comical, and Humorous Queries, Paradoxes, &c. &c. With pertinent and ingenious answers. Being the Essence taken from The Lady's, Gentleman's, & Carnan's Diaries-Martin's Philosophical Magazines-Ozanam & Hooper's Recreations, &c. &c. (illustrated with Copper-Plate Engravings.) To which are added a great number of originals. Likewise, An appendix; containing various propositions tending to prove Light and Heat two distinct beings. With some curious definitions in Optics.