4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



geological sections in which the fossils occurred. These were in- 

 cluded in their description and discussion of the stratigraphy of 

 Shan-tung, Shan-si, and Shen-si. Mr. Blackwelder also made a 

 rapid reconnaissance of the southwestern portion of the province of 

 Liau-tung, Manchuria, and identified certain Cambrian formations, 

 but did not find any fossils. 



From the collections made by Baron von Richthofen, it was evi- 

 dent that a considerable Cambrian fauna existed in the western part 

 of Liau-tung, so I delayed final publication of the description and 

 discussion of the Cambrian collections made by Messrs. Willis and 

 Blackwelder, in the hope that material could be secured from that 

 region. Learning in the spring of 1909 that Prof. Joseph P. Iddings, 

 of the University of Chicago, was about to visit Japan and China 

 in connection with his study of eruptive rocks, I induced him to visit 

 Manchuria and make a collection of Cambrian fossils for the Smith- 

 sonian Institution from the Island of Tschang-hsing-tau, east of 

 Niang-niang-kung, in the province of Liau-tung. He was so fortu- 

 nate as to secure the services of Li San, Dr. Bailey Willis's inter- 

 preter, who was also a good collector, and they obtained a large 

 number of specimens, representing over fifty species of invertebrate 

 fossils. 



Wishing to have better illustrations of the species described by 

 Messrs. Dames and Kayser for Baron von Richthofen, I wrote 

 to Prof. W. Branco, Director of the Royal Geological and Paleonto- 

 logical Institute and Museum at Berlin, who very kindly had photo- 

 graphs made for me of all the specimens illustrated by Doctor Dames 

 that could be identified in the collections. 



Through the courtesy of Dr. Wilhelm Deecke, of the Geological 

 Institute of the University of Freiburg, I have had the opportunity 

 of studying most of the specimens from China used for illustration 

 by Dr. Th. Lorenz.^ This enabled me to make identifications that 

 otherwise would have been very difficult, owing to the fragmentary 

 character of the specimens illustrating the trilobites. 



The chief results obtained from the study of the Chinese collec- 

 tions are the discovery of portions of the upper part of the Lower 

 Cambrian fauna and a great development of a Middle Cambrian 

 fauna of the same general character as that of the Cordilleran Prov- 



^Zeitschr. deutsch. geol. Gesellsch.. Vol. 58, 1906, pp. 53-108, pis. 4-6, and 55 

 text figs. : Beitrage zur Geologic und Palaeontologie von Ostasien unter 

 besonderer Beriicksichtigung der Provinz Schantung in China ; II : Palseon- 

 tologischer Teil. 



