[D] By the United States Weather Bureau days are characterized as "cloudy" when for 0.8 or more of the possible hours of sunshine the sun is obscured; "partly cloudy" when from 0.4 to 0.7 inclusive is obscured; and "clear" when 0.3 or less.
[E] See The Child and the Weather, Pedagogical Seminary, April, 1898.
[F] France is not the first country that has started on this course. The spirit of justice has suggested similar reforms in countries which have no questions of depopulation to deal with. Reductions of taxes proportioned to the number of children have been granted in Prussia, Saxony, most of the secondary states of Germany, Servia, Norway, Sweden, several Swiss cantons, and Austria.
[G] A Thousand Days in the Arctic. By Frederick G. Jackson, Knight, First Class, of the Royal Order of St. Olaf, etc. New York and London: Harper & Brothers, 1899.
[H] On the South African Frontier. The Adventures and Observations of an American in Mashonaland and Matabeleland. New York: Charles Scribner's Sons. Pp. 430, with map. Price, $3.
[I] How to Know the Ferns. A Guide to the Names, Haunts, and Habits of our Common Ferns. By Prances Theodora Parsons. New York: Charles Scribner's Sons. Pp. 215. Price, $1.50.
[J] The Microscopy of Drinking Water. By George Chandler Whipple. New York: John Wiley & Sons. Pp. 300, with nineteen plates.
[K] Hypnotism and its Application to Medicine. By Otto Georg Wetterstrand, M. D. Authorized translation (from the German edition), by Henrik G. Petersen, M. D. Together with Medical Letters on Hypno-Suggestion, etc. By Henrik G. Petersen, M. D. New York: G. P. Putnam's Sons. Pp. 166.
[L] Instinct and Reason. An Essay concerning the Relation of Instinct to Reason, with some Special Study of the Nature of Religion. By Henry Rutgers Marshall. New York: The Macmillan Company. Pp. 574. Price, $3.50.
[M] A Short History of Astronomy. By Arthur Berry. New York: Charles Scribner's Sons. (The University Series.) Pp. 440. Price, $1.50.
