Personal and Scientific Neios- 387 
ufacture of black varnishes, for which purpose a large quantity was 
last year sent to Europe. 
Akron, 0., Nov. 1, 1SS9. E. W. Claypolb. 
The geology of the Montmorknci. A. correction in a date. The 
main object of the present note is to correct an error in dates as given 
at the head of an article as below. In the number of the Geologist 
for August, 1888 (vol. ii, pp. 9J-100), is a reprint of an article by Dr. 
Emmons on the "Geology of the Montmorenci." It is stated to be 
taken from the American Magazine, November, 1847." This date is 
wrong. It should be IS4I. The article is in volume one of the above 
periodical, pp. 146-150 No notice seems to have been taken of this 
error in dates, but it was called to my attention when fortunate enough 
to see the original paper, which, by the way, I was a long time in 
doing, because of the very error alluded to. 
There were only two volumes of the "American Magazine" pub- 
lished, and these cover the years 1841 and 1842. In the second volume, 
pp. 5-9, Dr. Emmons published another article in which he gives in 
detail the lithological features of the Hudson River rocks as seen on 
lake Champlain. He mentions their extent from Canada to Mexico 
and discusses the dislocation and change of position they have under- 
gone. He also discusses the period at which the dislocation took 
place, and illustrates his remarks by two diagrams. In one of these 
he shows a fault on lake Champlain with the Trenton lower than the 
Calciferous. In the other the Hudson shales abut against rocks of 
Lower Helderberg age, namely, the Delthyris shale, Pentamerus lime- 
stone and Manlius waterlime. 
Washington, D. C, Nov. 19, 1S89. Joseph F. James. 
PERSONAL AND SCIENTIFIC NEWS. 
At the meeting of the Boston Society of Natur.\l His- 
tory, Nov. 6th, a communication from Prof. G. Frederick 
Wright stated the details of the finding of a small image at 
the depth of 320 feet in boring an artesian well at Nampa, in 
southwestern Idaho, about August 1st, 1889, with correspond- 
ence relating thereto. The image, which is about one and a 
half inches long, representing the human form, is made of 
baked clay, being identical in composition with the "clay 
balls," small lumps of irregular shape, that were found a little 
higher in the boring. It is a clay that has resulted from the 
decay of volcanic rocks, and in both cases it encloses micro- 
scopic particles of obsidian. The same kind of sand also is 
cemented on the surfaces of both by a slight incrustation of 
iron rust. The strata penetrated by the well are reported by 
Mr. M. A. Kurtz, who had charge of the work, as follows, in 
descending order : — soil and sand, 60 feet ; lava-rock, 12 to 15 
