16 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 1 
SCIENTIFIC NOTES AND NEWS 
The President has withdrawn from settlement three groups of prehistoric 
towers in southwestern Colorado and southeastern Utah. These are known 
as the ruins in Ruin Canyon, Holly Canyon, and Cool Spring House on 
Cajon Mesa. It is proposed that these groups be made a National Monument. 
On the occasion of the meeting of the Trustees of the Carnegie Institution 
of Washington on December 14 a reception and exhibition of apparatus and 
methods were held at the Administration Building of the Institution. 
The Pick and Hammer Club met at the U. 8. Geological Survey on Satur- 
day, December 2. Dr. F. E. Wricur spoke on geology in South Africa. 
At the meeting of the Physics Club of the Bureau of Standards on Decem- 
ber 11, Dr. J. C. Karcuer reported briefly on the papers on acoustics pre- 
sented at the Chicago meeting of the American Physical Society, December 1— 
2, 1922. 
The following public lectures have been given under the auspices of the 
Carnegie Institution of Washington: November 28. Tuomas Hunt Mor- 
GAN, professor of experimental zoology, Columbia University: The consti- 
tution of the hereditary material and its relation to development. December 5. 
Henry Norris Russe 1, director of the Princeton University Observatory: 
The properties of matter as illustrated in the stars. December 12. WALTER 
S. Apams, acting director of the Mount Wilson Observatory: The motions 
of the stars. 
Dr. Pentti Esxoua, who has been engaged in research work at the Geo- 
physical Laboratory, Carnegie Institution of Washington, for the past 
eighteen months, has returned to Finland to resume his work for the Geo- 
logical Survey of that country. 
Dr. CHARLES W. Gitmore has returned to his duties in the Department 
of Paleontology, U. 8. National Museum, after a two months’ absence at 
the University of Alberta, Edmonton, Canada. 
Dr. Joun B. Hunter, professor of anatomy at the University of Sidney, 
Australia, visited Washington in December. 
Dr. A. SomMERFELD of the University of Munich, Germany, will deliver a 
course of lectures on general quantum theory at the Bureau of Standards 
early in March. 
Dr. P. V. Wetts of the Optics Division of the Bureau of Standards resigned 
on December 1 to take up research work for the E. I. du Pont de Nemours 
Company, Parlin, New Jersey. 
