MEMOIRS 



OF THE 



BOSTON SOCIETY OF NATURAL HISTORY; 



VOLUME 6, NUMBER 1. 



THE COMPARATIVE ANATOMY AND PHYLOGENY OF THE CONIFER ALES. 



PART 2.— THE ABIETINEAE. 



By EDWARD C. JEFFREY. 



WITH SEVEN PLATES. 



BOSTON : 

 published by the society. 

 January, 1905. 



