VOLUME 16

NUMBER 1

Bulletin of the Seismological Society of America

PUBLICATION COMMITTEE

SIDNEY D. TOWNLEY, Stanford University, Cal.

HENRY D. DEWELL, San Francisco, Cal.

HARRY O. WOOD, Pasadena, Cal.

MARCH, 1926

CONTENTS

PAGE

1

The Depth of Focus of Two Recent Earthquakes and the Depth of the Surface Layer of the Earth in California. PERRY BYERLY

Tables of Earthquake Waves Reflected at a Discontinuity at a Depth of Fifty Kilometers.... PERRY BYERLY and GEORGE D. MITCHELL

10

Are Important Earthquakes ever Caused by Impact?

JAMES B. MCELWAY, S.J.

15

Meridian Circle Latitudes in California... ..R. H. TUCKER 19

Essays on Earthquakes.......

BAILEY WILLIS 27

Science Service and the Location of Earthquake Epicenters

WATSON DAVIS

41

Jay Backus Woodworth.

REGINALD A. DALY 43

Report of the Advisory Committee in Seismology.

45

Seismological Notes

61

Reviews

66

logical Society of America, April 10, 1926. Minutes of the Meeting of the Board of Directors of the Seismo-

68

Report of the President, 1925-26.

73

America Report of the Board of Election of the Seismological Society of

77

Errata

78

PUBLISHED BY THE SEISMOLOGICAL SOCIETY OF AMERICA IN COOPERATION WITH THE ADVISORY COMMITTEE IN SEISMOLOGY OF THE CARNEGIE INSTITUTION OF WASHINGTON.

The Bulletin of The Seismological Society of America - vol.16 No.1 March 1926 is a historical scientific journal that focuses on seismology, a branch of geology concerned with the study of earthquakes and seismic waves. This particular issue from 1926 likely contains articles and research findings related to the Society's activities and advancements in the field of seismology during that time period. It serves as a valuable resource for those interested in the history and development of seismological knowledge.