114 SOCIETY OF NATURALISTS. 



Papers were read as follows : — 



By Mr. Henry E. Summers, of Cornell University: 



1. On the Decalcification of the Skull by Nitric Acid to facil- 



itate the Removal of the Brain. By Professor Wilder 

 and Mr. Summers. 



JVotes and Queries froin the Anato7nical Laboratory of Cor- 

 nell University. 



2. Tilton's Liquid, a Preservative. 



3. The Determination of Combined Aquatic and Aerial 



Respiration. 



4. New Use of Slips in Scientific Correspondence. 



5. A Wheel for Slip Notes. 



6. Black Paper-muslin for Blackboard Use. 



7. Mounting of Human Skeleton in Normal Mammalian Po- 



sition. 



8. A Truck and Jar Protector, for Museums. 



9. Strengthening and Purifying Alcohol. 



Prof. C. H. Hitchcock. The International Geological Con- 

 gress. 



Pi'of. J. Playfair McMuRRiCH. A Useful Form of Mould 

 for Class Study. 



It was suggested by Prof. William B. Scott that the special 

 topic for the next annual meeting be The Teaching of Science 

 in Schools. 



Prof. William T. Sedgwick exhibited a new Form of Dia- 

 gram, clips to be used with the same ; a new Form of Microscope 

 Slide Boxes, and a very convenient Form of Dialyzcr. 



SIXTH SESSION. 



December 30, p.m. 



Biological Department of the University of Pennsyl- 

 vania.. 



President Gilbert in the chair. Thirty-three members present. 

 The names of Prof. H. C. Bumpus, Prof. Frederick Tucker- 



