MESSRS. EDITORS—I respectfully suggest that you have been tod modest in urging the claims of the Scientific American upon Teachers. Who are more interested in every improvement in science than Teachers ? We have to teach science in our schools, and where shall we look tor the history of every improvement but in the columns of the Scientific American? If we want the best elementary work on any science, we do not go to the obsolete catalogues of interested booksellers, but to the Scientific American. You will consider that many of your readers are far removed from extensive book establishments ; we cannot step into a bookstore at any moment and inquire for the latest and best work on any science. The Scientific American stands at the very well-head of knowledge, bottles the very cream of science, as it rises, and sends it forth as the nourishing food of thousands. And I feel sure that no class of your readers is more interested and benefitted than Teachers. B. W. WHITE. Bear Spring Seminary, Giles Co., Tenn., '52.