THAYER SCHOOL LECTURES

The following lectures have been presented at the Thayer School since the last issue of the MAGAZINE:

February 20, 1923, 3:00 P.M.

Motion Pictures loaned by the Bureau of Mines, Dept. of Interior, Pittsburgh, Pa.

Subjects: "Transportation of Iron Ore" and "Water Power."

February 23, 1923, 4:00 P.M.

Lecture by Mr. George P. Hemstreet, VicePresident of the Hastings Pavement Co., New York City.

Subject: "The Manufacture and Use of Asphalt Paving Blocks."

Illustrated by lantern slides.

February 27, 1923, 7.30 P.M.

Lecture by Mr. Ira G. Hoagland, Secretary of the National Automatic Sprinkler Association, New York City.

Subject: "The Automatic Control of Fire." Illustrated by lantern slides.

March 6, 1923, 3.30 P.M.

Motion Picture loaned by the Western Electric Co., New York City.

Subject: '"Connecting the Threads of Conversation."

March 10, 1923, 8.30 P.M.

Lecture by Mr. John H. Dunlap, Thayer School 'OB, Secretary of the American Society of Civil Engineers. (Accompanied by Mr. C. F. Goodrich, T. S. '06, Engineer, American Bridge Co., and Mr. Seegar, Highway Dept., Hartford, Ct.)

Subject: "The Professional Spirit."

March 16, 1923, 7.30 P.M.

Lecture by Mr. Prevost Hubbard, Chemical Engineer for the Asphalt Association, New York City.

Subject: "Asphalt and Its Use in Highway Engineering."

Illustrated by slides and motion pictures. March 19, 1923, 10.00 A.M.

Lecture by Col. H. C. Boyden of the Portland Cement Association, Chicago, Illinois.

Subject: "The Construction and Maintenance of Concrete Roads."

Illustrated by lantern slides. March 20, 1923, 3.00 P.M.

Motion Picture loaned by the U. S. Bureau of Mines, Pittsburgh, Pa.

Subject: "The Story of Steel."

The Thayer School has also 'held a public exhibition of a series of models illustrating the different processes used in the construction of highways. A separate model is shown for the various types of road. A culvert and a rubber exhibit illustrates the different kinds of fabric used in the manufacture of pneumatic tires. Interesting photographs and descriptive text illustrates the history and development of rubber and its uses in tires.