BIBLIOGRAPHY. 



I. Agassiz, J. L. R. 



On the age of the Connecticut valley sandstones. 



Boston Soc. Nat. Hist., Proc, iii, 336, 337, 1850. 



Exception taken to Dr. Jackson's statement that the Connecticut 

 sandstones are of Silurian age. Evidence of fossil fishes places the 

 formation much later in geological time. 



-2. Agassiz, J. L. R. 



On Marcou's " Geology of North America." 



Am. Jour. Sci., (2) xxvii, 134-137, 1859. 



Defense of Marcou's good intentions and of some of his statements. 



3. Akerly, S. 



Geology of the Hudson river and vicinity. 69 pp., i pi., 

 New York, 1820. 



Questions Old Red Sandstone age of Connecticut river sandstone. 



4. Barbour, E. H. 



The ancient inhabitants of the Connecticut valley. 

 Connecticut Almanac, 37-58, 46 figs., 1889. 



A popular account of the tracks and other impressions occurring in 

 the sandstone of Connecticut and Massachusetts. 



j. Benjamin, H. W. 



Scenes in and around Granby. 

 Connecticut Quart., i, 139, 140, 1895. 

 Describes old copper mine and Newgate prison. 



6. Blake, W. P. 



Review of a portion of the geological map of the United 

 States and British provinces by Jules Marcou. 

 Am. Jour. Sci., (2) xxii, 383-388, 1856. 



Enumeration and correction of numerous errors made by Marcou 

 • in the above work. 



7. Blake, W. P. 



Glacial phenomena of Mill Rock near New Haven. 



Science, i, 146, 147, 1883. 



Rock marked by steep south slope, gentle north slope; by rounding, 

 grooving, polishing. 



