594 
Mr. W. W. At.is, of Milwaukee, has given 
Columbia University the equipment for a steam 
engineering laboratory containing a number of 
valuable pieces of machinery valued at more 
than $15,000. 
Miss OLIVIA PHELPS SToKES has given Bar- 
nard College $5,000, the income of which is to 
be used for aiding poor students. 
Mr. A. J. BALFour has informed the authori- 
ties of Cambridge University that a friend of 
his who desired to remain anonymous wished to 
give £2,000 for general university purposes, in 
four installments, the first of which has been 
paid. 
SCIENCE. 
[N. S. Vou. VI. No. 146. 
Cordilleran mountain series,’ and on page 191 
he also says that the volcanoes occur in the 
Cordilleran region west of the meridian of Den- 
ver. On Plate 5 a map is given showing the 
distribution of voleanoes in the United States, 
upon which none are given east of the Rio 
Grande except the Spanish Peaks. 
These conclusions on the part of Professor 
Russell are erroneous and mar his otherwise 
excellent work, for some of the most beautiful 
and perfect volcanic craters in the United States 
occur in New Mexico, not only far east of the 
longitude of Denver, but fully 200 miles east of 
the true Rocky Mountain front, which extends 
between Trinidad and Las Vegas.* ‘These, as 
DISCUSSION AND CORRESPONDENCE. 
THE EASTERNMOST VOLCANOES OF THE UNITED 
STATES. 
To THE EDITOR OF SCIENCE: In looking 
through Professor I. C. Russell’s magnificent 
volume on the ‘ Volcanoes of North America,’ 
I was surprised to see (page 129) the statements 
that ‘No volcanoes sufficiently recent to be 
recognized by their topographic forms. occur 
east of the sharply defined eastern border of the 
have been described by the writer, consist of 
a group of craters lying to the south of Folsom 
Station, in an eroded plain at the foot of the 
older lava capped Trinidad Mesa, which ex- 
tends eastward from the Rocky Mountains for 
*A brief notice of Mount Capulin was published 
by Orestes St. John in ‘Notes on the Geology of 
Northwestern New Mexico ;’ Bull. U.S. Geol. and 
Geog. Survey of the Territories, Vol. II., 1876. 
Bull. Geol. Soc. Am., Vol. 3, p. 99, 1891. 
