Dynamic Electricity. By E. E. Day. New York: D. Van Nostrand. Pp. 167. 50 cents.
Politics. By William W. Crane and Bernard Moses. New York: G. P. Putnam's Sons. Pp. 305. $1.50.
Report of the State Board of Health of Connecticut. Hartford, Conn.: Case, Lockwood, and Brainard Co. Pp. 124.
Economic Tracts, First and Second Series, 1881 and 1882. New York: Society for Political Education. Pp. about 200. $1.
Christianity Triumphant. By John P. Newman, D.D. New York: Funk & Wagnalls. Pp. 136. 75 cents.
Protection to Young Industries as applied in the United States. By F. W. Taussig, Ph.D. New York: G. P. Putnam's Sons. Pp. 72.
Third Annual Report of the United States Entomological Commission. Washington: Government Printing-office. Pp. about 500, with Plates.
My Musical Memories. By E. W. Haweis. New York: Funk & Wagnalls. Pp. 283. . $1.
Medical Directory of Philadelphia, 1884. By Samuel H. Hoppin, M. D. Philadelphia: P. Blakiston. Son & Co. Pp. 205. $1.50.
Political Economy. By Emile de Laveleye. Translated by A. W. Pollard. New York: G. P. Putnam's Sons. Pp. 288, $1.10.
My House: An Ideal. By O. B. Bunce. New York: Charles Scribner's Sons. Pp. 108. $1.
The Bowsham Puzzle. By John Habberton. New York: Funk & Wagnalls. Pp. 222. $1.
Flowers and their Pedigrees. By Grant Allen. New York: D. Appleton & Co. Pp. 264. $1.50.
The Cinchona Barks. By F. A. Fluckiger, Ph.D. Philadelphia: P. Blakiston, Son &. Co.
A Text-Book of the Principles of Physics. By Alfred Daniell. London: Macmillan &, Co. Pp. 653. $5.
Recent Wonders of Electricity. New York: Agent College of Electrical Engineering. Pp. 168. $2.
Edward J, Hallock, A.M., Ph.D.—It is with much regret that we have to announce the death, on March 2 2d, of Dr. Hallock, for many years a contributor to this journal. He was born in Peekskill, New York, on the 19th of June, 1845. His early education was in the local schools of his birth-place, ending with the Peekskill Military Academy. In 1865 he entered Columbia College, whence he graduated four years later, receiving the degree of Bachelor of Arts. He was the recipient of the first prize in German, and in 1872 the college also conferred upon him the degree of Master of Arts. Soon after graduating he sailed for Germany, and commenced the study of chemistry in the University of Berlin. In 1870 he returned to this country, and was appointed assistant to President Parrish, of Swarthmore College, near Philadelphia. Upon President Parrish's resignation, he too resigned, and, leaving Swarthmore College, was appointed assistant to Professor Joy, occupying the chair of Chemistry in Columbia College. This place he held for several years, acting as professor during Dr. Joy's illness. He went to Germany again in 1877, and was assistant to Professor Hofmann, in Berlin, and received in 1878 the degree of Doctor of Philosophy from the University of Heidelberg. Returning then to this country, he was for two years Professor of Chemistry in the Southern Medical College, Atlanta, Georgia. Since 1878 he had been engaged in a large field of scientific work, lecturing in many educational institutions, and acting on the editorial staff of the "Boston Journal of Chemistry" and the "Journal of Applied Chemistry." He was a contributor also to many of the scientific journals of this city. Two laborious chemical indices are his work: one an "Index to the Literature of Titanium," the other an "Index to the Literature of Glucose," the latter prepared, at the request of Dr. C. F. Chandler, for the National Academy of Sciences. Both of these have been published, the latter appearing only a short time before his death. His last piece of literary work was a sketch of his German master in chemistry. Dr. Hofmann, which appeared in the April "Popular Science Monthly."
Dr. Hallock was a man of simple manners, modest to a fault, and with great sincerity and uprightness of character. He carried this trait into all his work. He was an excellent scientific teacher, and aimed at thoroughness as the first object of instruction. He lectured before many popular schools, and his patience was greatly tried by the tendency he constantly encountered on the part of their managers to make the lectures showy and sensational, so as to captivate ignorant patrons and advertise the institution.
On the Supposed Discovery of Iron in Prehistoric Mounds.—It has been generally understood that an iron or steel sword was found many years ago by Dr. Hildreth in one of the prehistoric mounds at Marietta, Ohio, and that an iron blade and a plate of cast-iron were found by Mr. Atwater in a mound at Circleville; and these supposed facts have been used to maintain the sup-