CONTENTS. 



PAGE 



1. A Preliminary Bibliography of Colorado History ioi 



Frederic Logan Paxson, Ph.D., 



Professor of History 



2. England and Mexico, 1824-1825 115 



Frederic Logan Paxson, Ph.D., 



Professor of History 



3. Lucretius and Haeckel before the Riddles of the 

 Universe 121 



Fred B. R. Hellems, Ph.D., 



Professor of Latin 



4. Trycorythus, a Genus of Mayflies 135 



T. D. A. COCKERELL, 

 Lecturer on Entomology 



and 

 Marie Gill 



5. On a new a, 8 Dihydroquinoxaline 139 



John B. Ekeley, Ph.D. 



Professor of Chemistry 



6. The Tertiary Lake Basin of Florissant, Colorado 145 



Junius Henderson, 



Curator of the Museum 



7. The Fossil Fauna and Flora of the Florissant 

 (Colorado) Shales 157 



T. D. A. COCKERELL, 

 Lecturer on Entomology 



8. Plants of the Florissant Region in Colorado . . 177 



Francis Ramaley, Ph.D., 



Professor of Biology 



