502 MR MARSH S COLLECTIONS. 



little more than a thousand dollars, or two hundred 

 pounds. I must add, however, what all collectors will 

 well understand, that Mr Marsh looks upon these slabs 

 of stone as so many children, and that he professes as I 

 am sure he feels a great unwillingness to part with 

 them. But, like Dr Deane of Greenfield whose name 

 is connected with the first discovery of these tracks, and 

 who has been obliged to discontinue collecting Mr 

 Marsh has living feet gathering now in plenty around 

 his daily table ; and his friends may prevail upon him 

 to consent that, for their sake, these great stones should 

 be converted into bread. 



I owe Mr Marsh this acknowledgment for the civility 

 he showed to Professor Henry Kogers and myself, not 

 only in exhibiting his collections, but in accompanying 

 us to Turner s Falls, and spending half a day in pointing 

 out the localities in which his more successful explora 

 tions had been made. Turner s Falls are formed by an 

 artificial dam, supported about the middle by two small 

 islands, over which the waters of the Connecticut river 

 fall from a height of thirty feet. With the adjoining, 

 for the most part, wild, elevated, and wooded scenery, 

 these artificial falls form the most striking object of the 

 kind in New England. Immediately below the falls, 

 the river rushes against an elevated ridge of trap, by 

 which it is made to turn nearly at right angles to its 

 former course. Against this trap ridge the edges of the 

 new red-sandstone strata abut at a high angle, turned 

 up, as President Hitchcock thinks, by the elevatory 

 movements which forced the trap ridge through them in 

 the angle at which they were naturally deposited, 

 according to the Professors Rogers. 



However this be, the break caused by the eruption of 

 the trap has exposed the edges of the lower beds of the 

 red-sandstone formation below Turner s Falls. Many of 

 these beds are dark-coloured ; bear the impressions of 



