^2 The West Americait Scie?ilisi. 



when existing- epidemically, and Mr. Wickson stated that such 

 a course had been spoken of, but could not say that it had ever 

 been carried out. Unfortunately, the more destructive of the 

 fruit and grain pests, do not seem to be seriously attacked by 

 this fungus, although the chinch bug has an inveterate enemy 

 in an allied fungus termed Entoviophthora, which also carries oft" 

 the larvae of certain butterflies. — C. P. Bates Recording Secretary . 



N.\TioNAL Academy of Sciences, Washington, D. C. — 

 April ry, 1S89. — Prof. Othaniel C March was re-elected Presi- 

 dent, and Prof. S. P. Langley, .Secretary of the Smithsonian Insti- 

 tution, elected Vice-president. After the election, the members 

 of the Academy called on the President of the United States, at 

 the White House 



The papers presented at this meeting of the Academy were as 

 follows: 



On Composite Coronography, by I. P. Todd; Memoir of Prof 

 S. F. Baird, by Dr. Billings; Memoir of Dr. Asa Gray, by Dr. 

 W. G. Farlow; Determinations of Gravity, by Mr. C. S. Peirce; 

 On the N. A. Probocidita, by Prof. E. D. Cope; On the Mass 

 of Saturn, by M. A. Hall, Jr.; On the Nature- and Composition 

 of the Double Hallides, by Prof. Ira Remsen; On the Rate of Re- 

 duction of Nitre Compounds, by Prof. Ira Remsen ; On Some Con- 

 nection Between Taste and Chemical Composition, by Prof Ira 

 Remsen ; Recent Researches in Atmospheric Electricity, by 

 Prof T. C. Mendenhall; Measurements by Light Waves, by 

 Profs. A. A. Michelson and E. W. Morley; On the Feasibility of 

 the Establishment of a Light Wave as the Ultimate Standard of 

 Length, by Profs. Michelson and Morley; Additional Experi- 

 mental Proof that the Relative Coefficient of Expansions Between 

 Baily's Metal and Steel is Constantly Between the Limits of Zero 

 and 95 Degrees of Temperature, by Prof W. A. Rogers. 



The Colorado Biological Association. — The recent 

 election of officers has resulted as follows: — President, C. 

 F. Morrison; Secretary, T. D. A. Cockerell; Treasurer, 

 H. G. Smith, Jr.; Council, Dr. C. H. Merriam, H. W. Nash, 

 Prof. A. S. Packard, D. W. Park, Prof. J. M. Coulter and D. 

 Gale. 



The membership is now sixty-three, the following having 

 joined during the last six weeks: Dr. E. B. Landis, H. Toden- 

 warth, J. Bentley, L. Stejneger, S. C. Cockerell, Prof James 

 Cassidy, Dr. D. O'Brine, Miss E. L. Morton, C. A. Cooper, 

 Miss Alice Eastwood, B. T. Galloway and H. A. Pilsbry. 



The additions to the fauna and flora of Colorado, as recorded 

 in the books of the association, have been during April, 1889: 

 Mammalia, i; Birds, i van; Reptiles, 3; Amphibia, 2; Fishes, i; 

 MoUusca, 2 vars. and i fossil species; Coleopter, 4; Hymenop- 



