258 The American Geologist. April, i9(o 
yet we find this latter fauna in northern Newfoundland. Again in 
New Brunswick he claims to find the fauna of Protolenus following 
in undisturbed succession to the beds which he says here contain the 
same fauna of Olenellus fHolmia] broggeri, why does not the fauna of 
Olenellus thompsoni show itself between? To take a step further 
west, at lake Champlain, Mr. Walcott does find the fauna of O. thomp- 
soni in Vermont, but it is a thousand feet above the base of this con- 
secutive series of Cambrian deposit. In what are said to be the basal 
beds of the series at Troy, New York, is found the fauna of O. [H.] 
broggeri, though not that species itself. Why do not Protolenus and 
Paradoxides follow in succession to the Broggeri fauna here, and why 
are the Broggeri and Thompsoni faunas separated by one thou.sand 
feet in thickness of measure? not coarse deposits, but limestones. No 
such condition as great thickness of measures characterized by one 
Cambrian fauna, is known in the eastern part of the continent; and we 
cannot but suspect that this intermediate zone of one thousand feet 
contains the faunas which will throw light on this paradox. 
G. F. M. 
PERSONAL AND SCIENTIFIC NEWS. 
The Geological History of Parasitism was the .sub- 
ject presented by Prof. J. M. Clarke in a lecture in the Co- 
lumbia series, Feb. 24th. 
Prof. C. E. Beecher of New Haven has prepared a 
life-size restoration of Stylonurus excelsior, the largest in- 
vertebrate animal found in the rocks of New York state, hav- 
ing a length of about five feet. 
The total traffic through the locks of the "Soo" 
Canal for less than eight months is five times as great in 
number of vessels and slightly less than twice as great in 
actual tonnage as passes through the Suez canal during an 
entire year. 
Mr. J. B. WoODWORTH, instructor in geology in Har- 
vard Universit\% has been appointed assistant on the New 
York geological survey to stud}' glacial features of New 
York. Mr. Woodworth will begin his studies in the lower 
Hudson valle}' in the season of 1900. — Science. 
During the Past Winter professor Emerson has com- 
pleted the map, covering the southern two-thirds of Worces- 
ter county, Massachusetts, and much of the microscopic 
work upon the crystalline schists. It is expected that by 
the end of the coming season the field work upon Worces- 
ter count}' will be practically completed. 
