Ad TRANSACTIONS OF THE 
FOURTH ANNUAL CONVENTION OF THE UTAH 
ACADEMY OF SCIENCES. 
Science Building, Salt Lake City High School, 
April 7 and 8, 1911. 
Friday, April 7, 1911. 8:15 p. m. 
“EUGENICS (THE SCIENCE OF RACE BETTERMENT)” 
Presidential Address ...... By Dr. E. D. Ball, U. A. C. 
“EARTH MOVEMENTS OF THE WASATCH” (Illustrated by 
the stereopticon) 
By Prof. Marcus E. Jones, Salt Lake City 
Saturday, April 8,1911. 10 a.m. 
“FROST AND KILLING TEMPERATURES,” 
By Dr. Philena Fletcher Homer, Pleasant Grove 
“ALKALI INJURY TO LEAVES OF THE 
PAG ha aie irene ete we eawUre eee eras By E. P. Hoff, U. A. C. 
“SOME PRESENT DAY FOREST 
PROBLEMS”... .By E. R. Hodson, Forest Service, Ogden 
“SOME INTRODUCED 
WEEDS. 4: By Prof. Charles Piper Smith, U. A. C. 
Saturday, April 8, 1911. 2:15 p. m. 
“THE CENTENARY OF AVOGADRO’S 
FIVPOTHESIS is OS eRY By Dr. W. C. Ebaugh, U. of U. 
“RELATION OF PARASITES TO THE DESTRUCTION OF 
PSOE IE OES initale ore ate ee eae By A. H. Kirtland 
“FIXATION OF FREE 
INTTROGEN 605 208 2s By Dr. Robert Stewart, U. A. C. 
“MAGNETIC ALLOYS OF THE NON-METALLIC 
WERE AT SS hata teeny By Dr. A. A. Knowlton, U. of U. 
Saturday, April 8, 1911. 8:15 p. m. 
“THE PLANETESIMAL HYPOTHESIS AS A SUBSTITUTE FOR 
THE NEBULAR HYPOTHESIS” 
By Prof. Wm. Peterson, U. A. C. 
““VERTICAL DISTRIBUTION OF TEMPERATURE” 
By A. H. Thiessen, U. S. Weather Service, Salt Lake City 
