SA Supplements Vol 88 Issue 2274supp

SA Supplements

Volume 88, Issue 2274supp

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Features

Progress in Naval Aircraft—I

Contributions to Naval Aircraft-Design and Construction by the United States, Culminating in the “NC-4” Type

J. C. Hunsaker

Splintering of Airplane Woods

Actual Tests of Different Available Airplane Woods to Determine Relative Splintering Under Rifle Fire

G. E. Heck

Pre-Paleolithic Man in England

A Review of the Evidence Which Has Been Gathered to Show His Existence

J. Reid Moir

Photography in Research

A Concise Review of the Applications of Photography in Industry

Arthur G. Eldredge

When did our Ancestors take to Trees?

Significance of the Divergence of the First Digit in the Primitive Mammalian Foot

James Williams Gidley

Life of Brass Condenser Tubes

Results of a Study of the Actions of Certain Metals in Distilled and Sea Water, and Possible Protective Measures

Guy D. Bengough, O. F. Hudson

Pressure Casting of High Tensile Copper Alloys

The Railways of Japan, Mineral Resources of the Republic of Georgia, and more

K. Yamaguchi

Flotation for the Practical Mill Man

F. G. Moses

Sub-Antarctic Whaling, Detecting Over-Heated Bearings

S. F. Harmer