SCIENTIFIC EXPEDITION TO NORTHWESTERN 

 COLORADO IN 1909 



PAGE 



i. Itinerary, Topography and Geology 101 



Junius Henderson 



2. Remarks on the Climatology of Northwestern Colorado . . . . 112 



W. W. ROBBINS 



3. A Botanical Trip in Northwestern Colorado 115 



W. W. Robbins 



4. Mollusca Collected in Northwestern Colorado in igog 125 



Junius Henderson 



5. Some Insects Collected in Northwestern Colorado in igog .... 126 



T. D. A. COCKERELL 



6. Reptiles and Amphibians of the University of Colorado Expedition of igog 130 



T. D. A. COCKERELL 



7. Notes on Birds and Mammals of Northwestern Colorado . . . . 132 



A. H. Felger 



8. Fossil Invertebrates from Northwestern Colorado 146 



Juntos Henderson 



9. Fossil Plants from the Mesa Verde Cretaceous 149 



T. D. A. COCKERELL 



10. Bibliography of Papers Dealing with the Geology and Natural History of 



Northwestern Colorado 151 



Itinerary, Topography and Geology 

 By Junius Henderson 



The expedition, under the auspices of the University of Colorado 

 Museum, outfitted at Newcastle, Garfield County, and traveled thence 

 by wagon, covering portions of Garfield, Rio Blanco and Routt Counties 

 (Fig. 1). Mr. W. W. Robbins, instructor in biology at the University, 

 had charge of the botanical work Mr. A. H. Felger, of the Denver 

 North Side High School faculty, acted as ornithologist and mammalogist. 

 James Terry Duce, a student of the Boulder High School, assisted in 

 various lines of work. The writer paid special attention to paleonto- 



