THE DINOSAURS 109 
particularly rich in examples of the great, horned T'ri- 
ceratops, while the Carnegie Museum, Pittsburgh, has 
the best Diplodocus. The Field Columbian Museum and 
the Universities of Wyoming and Colorado all have good 
collections. 
The largest single bone of a Dinosaur is the thigh 
bone of « Brontosaurus in the Field Columbian Museum, 
this measuring 6 feet 8 inches in length. The height of 
a complete hind leg in the American Museum of Natural 
History is 10 feet, while a single claw measures 6 by 9 
mches. The skeleton of Triceratops restored in papier- 
maché for the Pan-American Exposition measured 25 
feet from tip of nose to end of tail and was 10 feet 6 
inches to the top of the back-bone over the hips, this being 
the highest pont. The head in the United States Na- 
tional Museum used as a model is 5 feet 6 inches long 
in a straight line and 4 feet 3 inches across the frill. 
There is a skull in the Yale University Museum even 
larger than this. 
Articles relating to Dinosaurs are mostly technical in 
their nature and scattered through various scientific jour- 
nals. The most accessible probably is “ The Dinosaurs of 
North America,” by Professor O. C. Marsh, published as 
part of the sixteenth annual report of the United States 
Geological Survey. This contains many figures of the 
. skulls, bones, and entire skeletons of many Dinosaurs. 
