RECORDS. 55 



7- Prof. IIkxuv F, Osuorx. A simple method of injecting 

 the entire iirterial and \-enous systems in dilTerent coh)rs. 



S. Prof. R. Ramsay Whkjut. On certain methods of stain- 

 ing. 



9. Dr. Charlks S. Minot. On a new staining sohition fot 

 histological use. 

 10. Mr. Charles A. Ashburxer. Notes on barometric hyp 

 sometry. 



monday, dec. 29, 1s84. 



United States National Museum. 



Aftei-noo7t Session. 



President Hyatt in the chair. Thirty-four members present. 



After a somewhat prolonged discussion concerning the future 



publications of the Society, Dr. Gill moved to refer the whole 



question to the Executive Committee. Seconded and carried. 



The following new members were elected : William Healey 

 Dall, J. Playfair McMurrich, and Henry Sewall. 



The following papers \vere read : — 



1. Prof, H. C. Lewis. A summer school of geology. 



2. Mr. Charles A. Ashburner. Methods in practical geology. 



3. Prof, H. N. Martin, The use of modelling clay to illustrate 



lectures. 



4. Prof. Henry F. Osborn. Methods of investigating the em- 



bryology of the opossum. 



5. Dr. Theodore Gill. On osteological collections. 



THIRD MEETING, AT WASHINGTON, D.C. 



second day, dec, 30, 1SS4. 



Lecture-Room, U S. National Museum. 



Morning Session. 



President Hyatt in the chair. Thirty-nine members present. 



There was presented the followhig 



