The book is supplied with blanks for making drawings of the apparatus and for the pupil to record what he has observed and inferred concerning the experiment and the principle illustrated.
The experiments are carefully selected in the light of experience and arranged in logical order.

The treatment throughout is in accordance with the best laboratory practice of the day.
Hon.

W.T.Harris, U.S.Commissioner of Education, says of these Blanks: "I have seen several attempts to assist the work of pupils engaged in the study of Physics, but I have never seen anything which promises to be of such practical assistance as Hammel's Observation Blanks." _Specimen copies of the above book will be sent prepaid to any address, on receipt of the price, by the Publishers:_ American Book Company NEW YORK.

CINCINNATI.

CHICAGO * * * * * Burnet's Zooelogy FOR HIGH SCHOOLS AND ACADEMIES BY MARGARETTA BURNET Teacher of Zooelogy, Woodward High School, Cincinnati, O.
Cloth, 12mo, 216 pages.Illustrated.