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Vol. XXV. No. 2. Issued February 15, 1898 
CONTENTS. 
4 
I st conn TO THE LIFE-HISTORY OF RANUNCULUS = PLATES IV-VII). 
_ n M. Cou 
. - 2308 
BSERVATIONS ON SOME WEST AMERICAN THERMAL ALG& bbl udersode vie 
vill-x). Josephine E. Tilden - ‘ : 89 
SOCIETY FOR PLANT MORPHOLOGY AND PHYSIOLOGY : : : “one 
SRIEFER ARTICLES. 
THE TREE OpuNTIAS OF THE UNITED States. /. W. Toumey Z 3 get dy 
WINTER CHARACTERS OF CERTAIN SPORANGIA (WITH PLATE sax Charles Chamberlain 124 
ny’ ORTAL. : mf “ £ - Z i & é e vt 
THE STANDPOINT OF CRITICISM 
: RRENT “eda TURE. ‘ 
BOOK REVI - “ . ; : ee sie 
: eae A ace 
THE PuysioLocy oF PLANTS 
OR NOTICES : . - 5 ‘ ; : wes 
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