16 SEPTEMBER 1905, Page 25

In the series of " National Engineering and Trade Lectures,"

Edited by Ben. H. Morgan (A. Constable and Co.), we have received Vols. II. and III., British Progress in Pumps and Pumping Engines, by Philip R. Bjarling, and British Progress in Gas Works, Plant, and Machinery, by C. E. Brackenbury (6s. net each). They are too technical for detailed notice, but we may say that the plan of the series is to describe the appliances that have been or are in use, with the names of the manufacturing firms, &c.