"We Explore Dead Lodge Canyon 73 



lines of the different strata are not easily distin- 

 guished. 



On July 19th Mr. Barnum Brown went down 

 the river with his scow, motor-boat and rowboat, 

 bearing his party of five men and all his outfit. 

 They intended to camp on Sand Creek, which 

 they did, and never left that richest of all the 

 camps in the Belly Eiver Series in Dead Lodge 

 Canyon for three seasons; the richest, doubtless, 

 in history. I believe there are more exposures 

 of the strata there, than all the rest of the expo- 

 sures put together. I could not leave the great 

 carnivore Charlie had found. Or my wonderful 

 Chasmosaurus skeleton, showing the dermal cov- 

 ering for the first time in the history of horned 

 dinosaurs. Neither could we leave the splendid 

 skeleton of Ghyposaurus, or my new duck-billed 

 dinosaur to follow Brown and share with him 

 the gleanings of that rich field. Consequently, 

 with his five collectors, all first class men, filled 

 with energy and enthusiasm, with such a leader 

 and hunter, it is little wonder that he secured 

 that year a great collection, now being mounted 

 in the American Museum. He also spent the sea- 

 sons of 1914 and 1915 there also, most success- 

 fully. The Belly Eiver beds below Steveville 

 and near our camp, consist chiefly, as already 

 mentioned, of strata of silver grey sandstone, al- 

 ternating with yellowish or ash-colored clays. 

 Notice the picture (Fig. 25), how the dark clay 

 bed feathers out. The exposed clay beds crack 



