iv Preface 



Cretaceous fossil field in the world; will tell of 

 our adventures and strenuous labor in the greac 

 gorge of the Red Deer river, 500 feet deep, an1 

 many miles in length ; of the entire process of col- 

 lecting, learned by experience through so many 

 years of ceaseless effort; also the work of prep- 

 aration in our laboratory. In 1917 it will be 

 fifty years since I began collecting fossils, the 

 rich results of the past few years are due to the 

 splendid work done by my three sons of whom 

 I am justly proud, and the assistance rendered 

 me by the Geological Survey who have honored 

 every requisition I have made upon them and the 

 results have been far beyond my wildest dreams. 

 No other Museum in the world, except the 

 American in New York, can show such collec- 

 tions as we have made in the last few years. I 

 would like to tell you the whole story. Those of 

 you who have read my other volume and ha\e 

 sent me notes of appreciation I would like to 

 tell you of how much assistance they have been 

 to me, giving me fresh courage when I have 

 been nearly discouraged. I will illustrate the 

 new book with fifty original photographs show- 

 ing the fossil beds, the skeletons, or huge heads 

 in the rock, the manner of collecting, the work 

 of preparation in the laboratory, and the finished 

 specimen ready for exhibition. We have already 

 mounted the first duck-billed dinosaur in Can- 



