+ N. Y. Times. 11: 413. Je. 23, ’06. 330w. + Outlook. 83: 767. Jl. 28, ’06. 300w. R. of Rs. 34: 511. O. ’06. 50w.

“This is an interesting book.”

+ Spec. 96: 990. Je. 23, ’06. 240w.

Powers, Harry Huntington. Art of travel: the laboratory study of civilization. 2d ed. 50c. Bureau of University travel, Trinity place, Boston.

Some of the topics discussed by way of valuable suggestion to the prospective traveller are the art, purpose, method and means of travel, university travel, outfit and travel in different countries.

Powers, Harry Huntington, and Powe, Louise M. Outlines for the study of art. v. 2. $1.50. Bureau of university travel, Trinity place, Boston.

An outline for the later period of Italian art beginning with Leonardo and ending with the decadence. The text furnishes a guide for the laboratory study of the period and is written to accompany a collection of reproductions.

Powles, H. H. P. Steam boilers, their history and development. *$6.50. Lippincott.

About one-third of the work is devoted to the work of old-time engineers in boiler design beginning with the spherical boiler made by Hero of Alexandria in 150 B. C. Then follow chapters in plain, cylindrical, Cornish and Lancashire boilers, water-tube boilers, and motor-car boilers. His closing chapters compare various types of boilers, and discuss boiler development in general.