v1 
Mr. Wm. M. Davis. Banded Amygdules of the Brighton el 
Section of Entomology, February 26, 1880 
Dr. H. A. HAcren. On the Proboscis of Nemognatha 
General Meeting, March 3, 1880 
Prof. GrorcE H. STONE. The Kames of Maine (with Map) 
General Meeting, March 17,1880 . ‘ : 
Election of Members 
Dr. M. E. WADswortTH. On the Origin of the Tron Ore of ‘Morqnette 
District, Lake Superior e 5 ; : , : “ 
General Meeting, April 7, 1880. 
Mr. W. O. Crospy. On the Age and Succession of the Crystalline 
Rocks of Guiana and Brazil ; 5 ; : : : 
General Meeting, April 21, 1880 
Resignation of President BouvE 
Nomination of officers for 1880-1881 
Special Anniversary meni! ee 28, 1880 
Index : : : 
DATE OF PUBLICATION OF EACH SIGNATURE IN VOL. XX. 
Sig. 1. Jan. 1, 1879. Sig. 17. Nov. 20, 1879. 
Sig. 2. Jan. 1, 1879. Sig. 18. Feb. 5, 1880. 
Sig. 38. Jan. 22, 1879. Sig. 19. Dec. 17, 1879. 
Sig. 4. Feb. 5, 1879. Sig. 20. Feb. 5, 1880. 
Sig. 5. Feb. 5, 1879. Sig. 21. Apr. 7, 1880. 
Sig. 6. Mar. 1, 1879. Sig. 22. Apr. 7, 1880. 
Sig. 7. Apr. 4, 1879. Sig. 23. Oct. 20, 1880. 
Sig. 8. Apr. 4, 1879. Sig. 24. Oct. 20, 1880. 
Sig. 9. June18, 1879. Sig. 25. Nov. 3, 1880. 
Sig. 10. June 18, 1879. Sig. 26. Jan. 5, 1881. 
Sig. 11. Aug. 4, 1879. Sig. 27, June 25, 1881. 
Sig. 12. Oct, 24, 1879. Sig. 28, June 25, 1881. 
Sig. 18. Oct. 29, 1879. Sig. 29, July 28, 1881. 
Sig. 14, Nov. 20, 1879. Sig. 80. July 28, 1881. 
Sig. 15. Nov. 20, 1879. Sig. 81. Aug. 5, 1881. 
Sig. 16. Nov. 20, 1879. Sig. 32. Nov. 5, 1881. 
426 
429 
429 
430 
430 
470 
470 
470 
480 
480 
497 
497 
498 
499 
500 
