CONTENTS OF VOLUME 21 OF THE TRANSACTIONS 



PAGES PRICE 



1-144 The Last Months of Chaucer's Earliest Patron, 



by Professor Albert S. Cook (Dec. 1916) .... $1.60 



145-200 The Relationship of the Tetracoralla to the Hexa- 



coralla, by W. L Robinson (Feb. 191 7) 40 



201-313 The American Species of Marchantia, by Alex- 

 ander W. Evans (March, 1917) 1.20 



315-442 A Survey of Ancient Peruvian Art, by Philip 



Ainsworth Means (May, 1917) 1.50 



CONTENTS OF VOLUME 22 OF THE TRANSACTIONS 



PAGES PRICE 



1-209 The History of Early Relations between the 

 United States and China, 1784-1844, by Ken- 

 neth Scott Latourette (Aug. 1917) $2.20 



211-248 Studies in the Calcite Group, by William E. Ford 



(Oct. 1917) 45 



249-467 The Veg-etation of Northern Cape Breton Island, 

 Nova Scotia, by George E. Nichols (July, 

 1918) 2.40 



CONTENTS OF VOLUME 23 OF THE TRANSACTIONS 



PAGES PRICE 



1-63 Chaucerian Papers-I, by Professor Albert S. 



Cook (November, 1919) $0.80 



65-108 Spenser's English Rivers, by Charles G. Osgood 



(January 1920) $0.60 



