Miscellanies. 



373 



the circuit, and while the galvanic current is flowing without ob- 

 struction. To effect this, place the spring-wire m, with /, on the 

 whole portion of the ferule and turn the wheel. A slight shock 

 will be felt at b, c, being simply the consequence of magnetic dis- 

 turbance by the motion of the armature. A single thermo-elec- 

 tric pair of bismuth and antimony plates heated and cooled, af- 

 fords a shock which is felt as far as the wrist. 



Washington, D. C. June 2, 1S38. 



MISCELLANIES. 



1. Synopsis of a Meteorological Journal kept in the city of New 

 York for the year 1837, including the average results of the last 

 five years; by W. C. Redfield. — The observations which I have 

 made on the direction of the wind near the earth's surface, and also 

 on the direction of the highest observed clouds, at periods of four 

 hours' duration, commencing at 6 A.M. and ending at 10 P.M., are 

 comprised in the following table.* 



* For a summary of observations from 1833 to 1836 inclusive, see Reports of the 

 Regents of the University of the State of New York for the years 1835 and 1837 ; 

 also, American Journal of Science, Vol. xxviii, pp. 154 — 159. 



