TABLE OF CONTENTS. 
The effect of the presence of insoluble substances on ete 
the toxic action of poisons - Rodney H. True and C. S. Oglevee I 
The relation of soils to natural vegetation in Ros- 
common and Crawford counties, Michigan. 
Contributions from the Hull Botanical Labor- 
atory. LXVI (with map) - - B. E. Livingston 22 
New and noteworthy western plants. II - - A.D. E. Elmer 42 
The morphology of Monascus pur pureus - - E.W. Olive 56 
The theory of respiration - - - C. R. Barnes 81 
The forests of the Flathead Valley, Montana. Con- 
tributions from the Hull Botanical Laborat 
LXVII (with map and twenty-three aa a N. Whitford 99,194,276 
spi in the Gramineae. VIII. Munroa squarrosa 
Nutt.) Torr. saat twelve figures) - . Theo. Holm 123 
Soke of generations in animals from a botanical 
standpoint. Contributions from the Hull 
Botanical sabaeieny: LXVIII “= two 
figures) . C. J. Chamberlain 137 
Gametophytes and embryo of Torreya ait. Con- 
tributions from the Hull Botanical Laboratory. ° 
LXIX (with plates A, I, 17, TI) - J. M.CoulterandW.J.G. Land 161 
The principles of phytogeographic nomenclature -  Pehr Olsson-Seffer 179 
Contributions from the Cryptogamic Laboratory of 
Harvard University. LX. A new American 
species of Wynnea (with plates IV and V) - Roland Thaxter 241 
On the development of Hamamelis virginiana. Con- 
tributions from the Botanical Laboratory of 
Johns Hopkins ik tite No. 3 iis si 
VI and VII) - - > D.N. Shoemaker 248 
Sexual reproduction in the rusts (with _— VIR}. + A. H. Christman 267 
On proteolytic enzymes. I - Arthur L. Dean 321 
Development of sporangium in Botrychium. Contri- 
butions from the Hull Botanical nee: 
LXXI (with plate IX) - - Ira D. Cardiff 340 
