96 TRANS. ST. LOUIS ACAD. SCIENCE. 



A discussion of the distribution of magnetism in this State will 

 be deferred until the completion of the survey, which will require 

 two years, by which time the completion of a similar survey in 

 Iowa, by Dr. G. Hinrichs, may enable us to include all under 

 one discussion. 



Station i — lovja City, Iowa. In University campus. Lat. 41° 39 41"; 

 Lon. 91° 31' 30". 



Station 2 — Four miles west of Iowa City, in front of house of P. Ni- 

 pher, 40 yds. distant. 



[At these two stations no tent was used ; the results are, therefore, not 

 verv reliable. Hinrichs gives the following values, determined under a 

 tent: Declination 8" 24'. //■=: 4.1S4.] 



Station Z—St. Charles, St. C/iarles Co., Mo. Lat. 38° 45' .0; Lon. 90° 

 29' .8. In field on river bottom, 20 rods S.W. of depot. 



Station 4 — Wright City, Warren Co., Mo. Lat. 38° 47'.i ; Lon. 91° 

 00'. In orchard of Charles Bird, S.E. of depot. In this region local action 

 is observed at many points. 



Station 5 — Mexico, Audrain Co., Mo. Lat. 39° 11'. 1 : Lon. 91° 

 52'.!. In vacant lot at S.W. corner of Washington and Love streets. 



Station d — Columbia, Boone Co., Mo. Lat. 38° 56' .5 ; Lon. 92° 



20' .2* In University campus, on hill S.E. of spring and N. of the N.E. 

 corner of the stone building of the University. 



Station "j— Louisiana, Pike Co., Mo. Lat. 39° 28' .0; Lon. 91° 06' .7. 

 Declination and inclination with needle No. 3 at corner of Fourth and Ala- 

 bama streets. All intensity observations and' inclination, with needle 2, 

 were taken in the yard of Blodgett's hotel, corner of Third and North 

 Carolina streets. 



Station B — Hannibal, Marion Co., Mo. Lat. 39° 44'. i; Lon. 91° 

 23'. 7. On Holliday's Hill, at head of Main street, overlooking limestone 

 quarry. 



Station g— Canton, Lewis Co., Mo. Lat. 40° 08.6; Lon. 91° 35.6, 

 In vacant lot two blocks S. of Down's house. 



Station 10— Keokuk, Lee Co., Iowa. Lat. 40° 24'. 8; Lon, 91° 28'. o. 

 In vacant lot at corner of Third and Concert streets. Wind-vane of Signal 

 Office bears S. 7° 4i'.6 W. 



Station li— Memphis, Scotland Co., Mo. Lat. 40° 27'. 3; Lon. 92° 

 13'. 3. In vacant lot N. of N.W. corner of public square and opposite 

 hotel. 



* Prof. Ficklin gives the following determinations : Lat. 38" 56/ ?"; Lon. 15° 16' 30", 

 from Washington. 



