The Pennsylvania Society for the Prevention of Tuberculosis works for the single end of educating the community in a knowledge of the true nature of consumption and of the means of controlling or conquering it. For this it diffuses literature, seeks the aid of persons in influential positions, and strives to obtain the requisite conditions for restoring those early afflicted and for preventing the communication of infection to others from those far advanced. Its main effort is directed toward the establishment of a municipal hospital for tuberculous patients, and for a sanatorium in the high regions of the State. For the last purpose it is offered a most desirable location in Luzerne County. The list of recent deaths among men known in science includes the names of W. W. Norman, Professor of Biology in the University of Texas; John Whitehead, who died while on a scientific mission to the island of Hainan, for which he left England in the autumn of 1898; Naval Lieutenant Charles William Baillie, Marine Superintendent of the English Meteorological Office, inventor of the hydra sounding machine, late Director of Nautical Studies at the Imperial Naval College, Tokio, and author of important meteorological investigations, at Broadstairs, June 2th, aged fifty-five years; Henry Wollaston Blake, an original member of the Institution of Civil Engineers, of the Institution of Mechanical Engineers, and of the British Association, and a Fellow of the Royal Society, eighty-four years of age; Edward Jannetaz, a French mineralogist, an assistant in the Museum of Paris, and Lecturer on Mineralogy for forty years, Master of Conferences in the Faculty of Sciences, author of _Les Roches_ and other books, aged sixty-seven years; Dr. Eugen Ritter von Lommell, of the University of Munich, distinguished in mathematics, physics, and optics, and author of several books on those subjects, including The Nature of Light in the International Scientific Series, June 19th, in his sixty-third year; Sir Alexander Armstrong, arctic navigator and discoverer of the Northwest passage, late Director-General of the Medical Department of the British Museum, and author of a narrative of his great discovery and of a work on Naval Hygiene; Dr. Hugo Weidel, Professor of Chemistry in the University of Vienna; Sir William Henry Flower, late Director of the British Museum of Natural History, Past President of the British Association, at the time of his death President of the Zoölogical Society of London, and author of several excellent books on zoölogy, natural history, museums, and kindred subjects, aged sixty-eight years; and Dr. Daniel G. Brinton, the distinguished American ethnologist and linguist, of whom we give a fuller notice elsewhere. Transcriber's Notes: Words surrounded by _ are italicized. Words surrounded by = are bold. Obvious printer's errors have been repaired, other inconsistent spellings have been kept.