Reiss and Stiibel—Barometrical Measurements in Eeuador. 267 
work at night or in unfavorable weather. j 
€ memoir is accompained by photographic plates of tissues, 
magnified 400 to 500 diameters, as examples of the results 
obtained in the manner described, and concludes with descrip- 
tion of the preparations. | 
Sa 
ART. XXXV.—Barometrical Measurements in Ecuador M4 by W. 
Reiss and A. Srijpen. Translated from the Spanish by 
Professor OrTon, Vassar College. 
\to, as determined by the able North German Expedition in 
1870-1. Schmidt’s a of the vara, given below, differs from 
the standard in the U. S. Office of Weights and Measures by 
~ ‘0015 meter. I have reduced the meters to English feet. 
R. and S., 15,704 ;—of the crater by Wisse and Moreno, 13,600 ; 
Orton, 18,800; R. and S., 18,175.] | 
Norr.—The altitudes are calculated in meters above the level 
of the sea, one meter equaling 1°1963 Spanish vara. ing gnats 
Part of the observations were made with the barometer; but trig 
