II.—The Twelfth International Geological Congress in Canada

Twelfth International Congress of the Transplantation Society

Twelfth Congress of the International Association of Limnologists.

THE Twelfth Congress of the International Association of Liinnology, of which Dr. Gunnar Alm' of Sweden is president, will be held in Cambridge, England, at the Windermere Laboratory of the Freshwater Biological Association. The Congress will open late in the afternoon of August 20 and continue through August 30. Preparations have been in the hands of the Organising Cominittee, with Professor F...

Maps for the International Geological Congress at Madrid.

Qua Vadimus? PROFESSOR ERNST COHEN .................... 407 So-called Volcanic Earthquakes: DR. T. A. JAGGAR...... 414 New York City as a Field for Earthquake Study: DR. CHESTER A. REEDS .. ................. 415 William E. Safford: DR. WILL C. BARNES ................-. . ....... 418 Scientific Events: Development of the Biological Laboratory at Cold Spring Harbor; The Mellon Lectures at the Uni...

Twelfth International Congress on Sound and Vibration MEASUREMENT OF SOUND QUALITY FOR CRITICAL LISTENING

For the critical assessment of music recordings the uniformity of the pressure amplitude response with respect to frequency has robustly been defended as one of the principals of prime importance for any electro-acoustic monitoring system. This has been particularly so in the appraisal of the room responses, where non-linear factors such as intermodulation distortions do not apply. However, des...

NLRCS International Congress Abstract Book