CATALOGUE SLIPS. 



Connecticut. State geological and natural history survey. 



Bulletin no. 23. Central Connecticut in the geo- 

 logic past. By J. Barrell. Hartford, 1915. 



44 pp., 5 pis., 23 cm . 



Barrel^ Joseph. 



Central Connecticut in the geologic past. By 

 Joseph Barrell: Hartford, 1915. 



44pp., 5 pis., 23 cm . 



(Bulletin no. 23, Connecticut geological and natural history survey.) 



