Some Recent Texts in General and Organic Chemistry: Conversations on Chemistry . By W. Ostwald, Professor of Chemistry in the University of Leipzig. Authorized translation by Elizabeth Catherine Ramsay. Part I., General Chemistry. New York, John Wiley & Sons. Pp. v + 250. 12mo. $1.50; Descriptive Chemistry . By Lyman C. Newell, Ph.D. (Johns Hopkins), Professor of Chemistry, Boston University. Author of 'Experimental Chemistry.' Boston, D. C. Heath & Co. Pp. vi + 590. 12mo…