CONTENTS 
Page 
North American Ascochytae. J. J. Davis — -653 
Notes on Parasitic Fungi in Wisconsin, IV. (With two 
Figures). J. J. Davis -----— 671 
Notes on Parasitic Fungi, V. J. J. Davis -690 
Notes on Parasitic Fungi, VI. J. J. Davis _705 
Contribution to the Chemistry of American Conifers. (With 
one Table). A. W. Schorger ____ 728 
Pigments of Flowering Plants. Nellie A. Wakeman _767 
History of the United States Pharmacopoeia, I. The Galen¬ 
ical Oleoresins. Andrew G. Du Mez_ 907 
Studies of Zygospore Formation in Phycomycetes Nitens 
Kunze. (With Plates XVI-XVIII). Mary Lucille 
Keene _ 1195 
Proceedings of the Academy, 1917 and 1918_ l_1221 
List of Officers and Members, corrected to September 1, 
1918 __________1233 
Extracts from the Charter of the Academy, _1257 
Constitution _ 1260 
Index of Volume XIX_______iii i Y 
