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AME RICAN 
JOURNAL OF SCIENCE, 
EDITORS 
JAMES D. ann E. S. DANA, anv B.. SILLIMAN. 
ASSOCIATE EDITORS 
Proressors ASA GRAY, JOSIAH P. COOKE, anp 
JOHN TROWBRIDGE, or Campriner, 
Prorgssors H. A. NEWTON anp A. E, VERRILL, or 
New Haven, 
Proressor GEORGE F, BARKER, or Putiapetpata. 
THIRD SERIES, 
VOL. XXVI.—[WHOLE NUMBER, CXXVI.] 
Nos. 151--156. 
JULY TO DECEMBER, 1883. 
WITH FOUR PLATES. 
NEW HAVEN, CONN.: J. D. & E. 8. DANA. 
1883. 
MIS90UR! BOTANICAL 
GARDEN LIBRARY 
