Proceedings of Scientific Societies. 383 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
UNITED STATES NATIONAL ACADEMY OF ScrEeNcEs. — The 
Academy met in Washington, commencing April 17th, 1888, and 
remained in session until April 20th, inclusive. The following 
papers were read :—“ The Rotation of the Sun,”' J. E. Oliver ; 
“ The Foundations of Chemistry”! T. Sterry Hunt; “On an Im- 
proved Form of Quadrant Electrometer, with Remarks upon its 
bon and its Existence in the Sun,”* H. A. Rowland ; “ The Char- 
acteristics of the Orders and Sub-Orders of Fishes,” * Theo. Gill; 
= The Serpent-Mound and its Surroundings,”* F. W. Putnam; 
The Systematic Relations of Platypsyllus as Determined by the 
Larva,”* ©, V. Riley (presented by Theo. Gill); “ On the Position 
of the Nova of 1572, as Determined by Tycho Brahe,”* C. H. F. 
Peters ; “Some Notes on the Laramie Groups,”* J. S. Newberry ; 
‘a the Structure and Relations of Placoderm Fishes,”* J. S. 
P Six new members of the Council were elected, as follows :— 
Hes Brush, Langley, Pickering, Remsen, Gould, and Gen. 
eigs. Four new members of the Academy were elected—Profes- 
‘Read April 17. # Read April 18. * Read April 19. ‘Read April 20. 
