GEOLOGICAL AND jSTATUKAL HISTORY SUKVEYS. 5ol 



area lying between this and tlie one studied by Mr. Sweet. This work 

 was, unfortunately, cut short by his death by drowning, which took 

 place on August 17 in one of the rapids of the Flambeau River. To 

 overcome the delay incident to this accident, tw^o new parties were 

 organized, one under the direction of F. H. King, to which w^as 

 entrusted the examination of the valley of the Flambeau River, and 

 the other, under F. H. Brotherton, was charged with the explora- 

 tion of the territory on the west side of the Chippewa River. Irving 

 continued his work in the Lake Superior region. Wright was, dur- 

 ing this season, prevented by his duties as commissioner of mining 

 statistics from taking the field. The area previously assigned him 

 was, therefore, examined by Chamberlin, the chief geologist, as- 

 sisted by A. D. Conover. L. D. Wooster continued his work in St. 

 Croix, Dunn, and adjacent counties, and A. C. Clark in the north 

 central portion of the State. T. B. Brooks and C. E. Wright worked 

 in the Oconto, Pine River, and Menomonee iron districts, while tlie 

 chemical work, as before, was in the hands of Gustavus Bode. The 

 invertebrate paleontology remained mainly in the hands of R. P. 

 Whitfield, while J. S. Newberry studied the fossil plants. Doctor 

 Hoy and Mr. King continued as in the previous year, while W. F. 

 Bundy made a study of the crustaceans. 



This survey was notable in that the microscopic investigations of 

 rocks by means of thin sections was an important feature. This 

 work was performed by A. A. Julien, R. D. Irving, R. Pumpelly, 

 C. E. Wriglit, and Arthur Wichman, the last of Leipzig.' 



The act establishing the survey provided for its continuance for 

 but four years, or until the 1st of June, 1877. Through an act passed 

 March 20, 1878 tlie time was extended until Marcli 31, 1879, but the 

 approprii>ti(^n v.as loduced to $5,000. The following is the text of 

 this act: 



An act relating to the geological survey of tlie State of Wisconsiu, aud amendatory of 

 chapter 292 of the laws of Wisconsin for 187"., entitled "An act to provide for a com- 

 plete geological survey of Wisconsin, and to repeal chapter I'M of the General Lawn 

 of 1870," entitled "An net to provide for tlie survey of the lead district, making maps, 

 and collecting statistics from the same," and chapter 136 of the General Laws of 

 1872, amendatory thereof, and chapter 36 of the laws of Wisconsin for 1877, amenda- 

 tory thereof. 



The people oi the Stole of WiHConsin, represented in senate and assembly, 

 do enact os' follows: 



Skction 1. Section <> of duipter 292 of the Luws of Wisconsin for 1S73, is 

 hereby amended by .striking out the words " thirteen thousand dollars for each 



» It will be remembered that Ilawcs's work on the micropetrology of the rocks of New 

 Hampshire was also published in 1878. The first important work of this nature In 

 America was Zirkel's report on the rocks of the fortieth parallel, which appeared In 

 187C. Caswell's report on (lie rocks of the P.lnck Hills was puhlislied In ISSO. 



