IN the last number of Biometrika (viii., 1, 2, 1911) Prof. Karl Pearson has edited and published a very valuable paper by the late Dr. Crewdson Benington on cranial type-contours. The work is based on ...

To perform an eye mask test, engineers used to draw a mask on the display of an analog oscilloscope with a grease pencil. Next, they had to trigger the oscilloscope with clock signal, turn up the ...

Herewith is given the field strength contour diagram of the recently completed transmitter at Redmoss. The diagrams are given in the usual form, one sheet for use in conjunction with Bartholomew’s ...