This weekly, of Philadelphia - always interesting, has added to its value by engaging Prof. Angelo Heilprin of the Academy of Natural Sciences, of Philadelphia, to report the proceedings of the different sections, which now only instruct the members present, and remain dead on the minute books. The Academy has grown to such proportions that there is not time for the researches made in every branch of science to be introduced at the usual Tuesday evening meetings, the proceedings of which alone find a place in the regular daily papers. Botany, mineralogy, entomology, biology, and other important divisions of science now have to have separate sections formed for them, and an immense amount of knowledge is brought out in them, which now, through the enterprise of the American, will be available to the public as well as the members.