CONTENTS. 
Page. 
Letter of transmittal... 22-0... 0 oe ee ee wee eee cee cece ce eeee Ilr 
Tierra rye oo ae ewes ccealacce ees eee te ee ee ee aes 463 
COOSTADNY oc ton eet rh oti ney oi te Pick een eee edees ee etine ene daseateas . 
GEO OOF cc eh oho eet ceheie eee ied tee ete eee ee se 
Altitudes 2.0. 000000 occ ee cee ee cece wee ne cee ee eee nee eee cece ee ee {6 
Precipitation and temperature. ........--.. 2-02-22 eee ee eee erence eee eee eee) 466 
Floral districts...... 20.000 cee cee ce eee eee cee eee eee ee eee nee tenes 469 
Foothills and surrounding plains......-....-.----- +--+ +--+ eee eee eee ee eee 469 
Mintiekahta: Plains:..000 248k eos eee ee Gee Oe ee eee ee obi eeeeteees AT2 
Harmey Mountain Range :.cscscdectncetiaiigdaceuite tics cseeee eae 473 
Limestone District...... 2222002 eee en eee eee ee ce eee cee ene tenes ATS 
Northern: Hills 2cocceeds on k wa eine ee tigen ieige es thu et Pe eee ee ATG 
Général remarks -26csoced ons Pe cse dere bende swale e weet dado eee ese eee 478 
Catalocue-of species iic0.52.56c0226snecceceteretees cee eed tieeteteaaees 479 
ILLUSTRATIONS. 
Facing page- 
Pate. XVII. Map of the Black Hills....-....---------- +--+ eee eee eee ee I 
XVI. Aquilegia brevistyla ......--....--0. 2-2-2 eee eee eee eee eee 481 
XIX. Aquilegia saximontana ...-...-.--- weet te cee cee nee cee eee 482 
XX. Poa pseudopratensis .......-..--.----- 2222s eee eee tee 532 
