530 BULLETIN 109, UNITED STATES NATIONAL MUSEUM. 



remained the same, with the exception of the appointment of Gus- 

 tavns Bode as chemist in place of Daniells, resigned. 



The work of the year would seem to have consisted, so far as the 

 chief geologist was concerned, in a reconnoissance begun about the 

 middle of August of the northern portion of the State " for the 

 general purpose of ascertaining the nature and amount of work to 

 be done to complete the survey in 1876." In this work he was as- 

 sisted by E. T. Sweet. 



Wight held the position for but one year, and in his turn was 

 succeeded, in February, 1876, bj^ T. C. Chamberlin, by whom the 

 survey was finally carried to completion. Under the latter's admin- 

 istration the working force of the survey was organized as follows: 



Corps: T. C. Chamberlin, chief geologist: R. D. Irving and M. 

 Strong, assistant geologists; W. J. L, Nicodemus, topographical as- 

 sistant. 



Local and special assistants: W, W. Daniells, chemist; Gustavus 

 Bode, chemist; T. B. Brooks, geologist; Charles E. Wright, iron 

 expert; R. P. Whitfield, paleontologist; P. R. Hoy, ichthyologist and 

 entomologist: F, H. King, ornithologist; L. C. Wooster. local 

 assistant; A. C. Clark, local assistant. 



Field and other assistants: D. Caneday, A. D. Conover, F. H. 

 Brotherton. I. M. Buell, C. S. Douglas, E. M. Hill, C. S. Bacon. 



Under Chamberlin's administration work was continued in the 

 northern and northwestern portion of the State during the first 

 six weeks of the season of 1876 ; a tract of some 25 townships, situated 

 in Bujffalo, Pepin, and Pierce counties, was explored, and careful 

 examinations made for evidence of geological changes within the 

 Quaternary period. Later the copper series were investigated by a 

 party under JMoses Strong and the announcement made that the so- 

 called cupriferous series extended in a nearly uninterrupted chain 

 across the northwest portion of the State. 



Irving continued his work in Ashland County and Wright in the 

 Penokee District. A. C. Clark was also engaged in making observa- 

 tions along the line of the " military wagon road survey." 



The invertebrate fossils collected during this period were placed 

 in the hands of R. P. Whitfield, who recog]nzed among them upward 

 of 150 species entirely new to science. The reptiles were studied by 

 P. R. Hoy: the birds, with especial reference to food habits, by Mr. 

 King. 



Field vvork for the season of 1877 was begun by E. T. Sweet in 

 Bayfield and Douglas counties. Moses Strong, who during the 

 previous season examined a belt extending from the St. Croix Falls, 

 northwestward to the vicinity of Lake Superior, began work in the 



