Expedition to the Bad Lands 75 



shop, completing a large Government monograph, 

 writing his own manuscript, and reading his own 

 proof. When we first met him at Omaha, he was 

 so weak that he reeled from side to side as he 

 walked; yet here he climbed the highest cliffs and 

 walked along the most dangerous ledges, working 

 without intermission from daylight until dark. 



Every night when we returned to camp, we found 

 that the cook had spent the whole day in cooking. 

 Exhausted and thirsty, we had no water to drink 

 during the day (all the water in the Bad Lands be- 

 ing like a dense solution of Epsom salts), we sat 

 down to a supper of cakes and pies and other pala- 

 table, but indigestible food. Then, when we went to 

 bed, the Professor would soon have a severe attack 

 of nightmare. Every animal of which we had 

 found traces during the day played with him at 

 night, tossing him into the air, kicking him, tramp- 

 ling upon him. 



When I waked him, he would thank me cordially 

 and lie down to another attack. Sometimes he 

 would lose half the night in this exhausting slum- 

 ber. But the next morning he would lead the party, 

 and be the last to give up at night. I have never 

 known a more wonderful example of the will's 

 power over the body. 



His memory and his imagination, too, were ex- 

 traordinary. He used to talk to me by the hour, 



