316 American Association for the Advancement of Scietice- 



3. On Ammonio-chlorid of Magnesium, by Dr. Linck. 



4. Geometrical Interpretation of Analytical Notation, by J. Pat- 

 terson. 



5. On a Self-registering Anemometer, by James H. Coffin. 



6. On a Curious Phenomenon relating to Vision, by Prof. Lovering. 



SECTION OF NATURAL HISTORY, GEOLOGY, &c. 



1. On some Characteristic Composites, by A. Gray. 



2. On a Process for selecting the Remains of Infusoria in Sedimen- 

 tary Deposits, by Prof. Bailey. 



3. On Leptsena and Spirifer, by Prof. Hall. 



4. On the Embryology of Cephalopoda, Aphides, Birds and Reptiles, 

 by Prof. Agassiz. 



5. On the Histology of Invertebrate Animals, by Prof. Agassiz. 



6. On several points of Embryology in connection with Classifica- 

 tion, by Prof, Agassiz. 



■ 



general meeting. — (Four o'clock, p. m.) 



1. On the Application of the Principles of Acoustics (o the Con- 

 struction of Lecture-rooms, &c, by Prof. Henry. 



2. On the Composition of Plant Phytons, and some Applications 

 of Phyllotaxis, by Prof. Gray. 



3. Mathematical Investigation pertaining to Phyllotaxis, by Prof. 

 Pierce. 



