126 SUMMER IN A BOG. 



investigations, returned home and continued his 

 search among the concretions. With most pa- 

 tient care and skill the hundreds of fragments 

 which he found in the nuclei of these ponderpus 

 spheroids were cemented, each in its proper 

 place. 



In one septarium a head of DinichtJiys, 

 though somewhat dislocated, was complete in 

 all its parts. In another was a perfect man- 

 dible, while still another contained one of the 

 teeth of the upper jaw. 



Though much broken, these specimens were 

 oarefuUy fitted to each other and restored to 

 full integrity by this faithful student. 



"The bones contained in these concretions," 

 writes Prof. Newberry, "are those of gigantic 

 fishes, larger, more powerful, and more singular 

 in their organization than any of those immor- 

 talized by Hugh Miller. I have named the most 

 remarkable one DinicMhys Hertzeri, or Hert- 

 zer's terrible fish. This name will not seem 

 ill-chosen when I say that the fish that now 

 bears it had a head three feet long by two feet 

 broad, and that his under jaws were more than 

 two feet in length and five inches deep. 



"They are composed of dense, bony tissues, 

 and are turned up anteriorly like sled-runners, 

 the extremities of both jaws meeting to form 

 one great triangular tooth which interlocked 



