OF THE AMERICAN ASSOCIATION - FOR THE ADVANCEMENT OF SCIENCE, TWENTY-NINTH MEETING, HELD AT Boston, Mass., AUGUST, 1880. SALEM: PUBLISHED BY THE PERMANENT SECRETARY. COMMUNICATIONS. On some of the consequences of the hypothesis, recently proposed, that the intrinsic brilliancy of the Fixed Stars is the same for each star. By Problems in Watson's Co-ordinates. Abstract. By THOMAS HILL On two New Instruments for the Determination of Time and Latitude. By |