ADDENDA 479 



EXCEPTIONALLY FINE EXAMPLE OF TETRABELODON 

 FROM NEBRASKA* 



In June, 1915, a remarkably well-preserved skeleton of 

 Tetrabelodon was found in Boyd County, Nebraska. The 

 inferior tusks, with their backing of jaw, are longer than 

 the upper ones, the part protruding beyond the bone being 

 nearly as long. This development of lower tusks seems 

 plainly to have resulted from their progressive use, as a 

 kind of scoop-shovel, to tear up roots, bulbs, and aquatic 

 plants, thus developing, in successive generations, the lower 

 jaw at the expense of the upper one. The skeleton is prac- 

 tically complete, and many of the bones are without a 

 scratch. 



CHINESE IVORIES IN SAN FRANCISCO's CHINATOWN 



The technical skill of Chinese ivory carvers is still very 

 notable in our day. A great variety of objects in carved 

 ivory are exported from China to San Francisco, and are 

 to be had in the Chinese shops of the quarter known as 

 Chinatown. As many as from fifty to two hundred of such 

 objects may be seen in any one of the dozens of shops in this 

 district of the city. These ivory carvings comprise round, 

 oval, and square frames, the so-called "magic balls," one 

 within the other, boxes, combs, paper cutters, engraved 

 tusks, and an endless variety of other small and dainty 

 things. 



FOSSIL DEPOSITS AT RANCHO LA BREA 

 See pages 357-359, 412 



The deposits of La Brea begin at Wilshire Boulevard and 

 extend eastward for a distance of about 1,200 feet. The 

 seam is not over from one to two acres in width and there 

 are only occasional patches of deposits and not a solid mass 

 of animal remains. 



*Commuiiicated by Dr. Erwin H. Barbour. 



