Miscellaneous Scientific Intelligence. 157 



tributary to the Saskatchewan. In the northward-facing cliffs, 

 25 miles east of the Glacier Lake section of 1919, and 40 miles 

 north of Lake Louise, a geological section was studied that tied 

 in the base of the Glacier Lake section of 1919 with the Middle 

 and Lower Cambrian formations. Returning up the canyon 

 valley of the Siffleur River to the wide upper valley of the Clear- 

 water River, a most perfectly exposed series of limestones, shales, 

 and sandstones of Upper Cambrian and later formations was 

 found, which cleared up the relations of the upper portion of the 

 Glacier Lake section to the Ordovician above. ' ' 



The year's work of the National Museum, now in charge of 

 W. de C. Ravenel, has been particularly important in that the 

 National Gallery of Art has now been separated from the museum 

 and made an independent unit. The Aircraft Building has also 

 been opened to the public, and much work has been done in reor- 

 ganization, so that the museum at present has a total of 49 

 recognized subdivisions. A total of nearly 340,000 specimens 

 have been added to the museum during the year ; many of these 

 are mentioned in detail. 



The International Exchange service has been much enlarged 

 owing to the resumption of relations with Germany ; an increase 

 of more than 82,000 packages over the preceding year is noted. 



The work of the Astrophysical Observatory is summarized by 

 the director, Dr. C. G. Abbot, as follows : 



' ' The year has been marked by the transfer of the solar radia- 

 tion measurements from Mount Wilson, California, to Mount 

 Harqua Hala, Arizona, to secure more perfect weather conditions. 

 It is intended to continue solar constant observations there daily 

 when possible throughout the entire year for several years. 

 Similar duplicate observations are to be carried on at Monte- 

 zuma, Chile, at the private station of the Smithsonian. Thus it 

 is hoped to provide an excellent basis of solar radiation measur- 

 ments to compare with weather phenomena, This may lead to 

 advance in methods of weather forecasting. Volume IV of the 

 annals, covering the years 1912 to 1920, is practically ready for 

 the press." 



3. Publications of the Carnegie Institution of Washington. — 

 Recent publications of the Carnegie Institution are given in the 

 following list (see earlier, vol. 1, p. 376, 1921) : 



No. 185. Index to United States Documents relating to for- 

 eign affairs, 1828 to 1861 ; bv Adelaide R. Hasse. In three 

 parts: Part III, pp. 1333, 1980; quarto. 



No. 273. Contributions to- Embryology, Nos. 47 and 48. Vol. 

 X, quarto, pp. iii, 103 ; 16 plates. 



Nos. 275, 276. Contributions to Embryology, No. 56. Vol. 

 XII. Studies on abortuses; by F. P. Mall and A. M. Meyer. 



