1872.] Dr. A.Dupre on the Elimination of Alcohol. 



107 



January 25, 1872. 



Sir JAMES PAGET, Bart., D.C.L., Vice-President, in the Chair. 



The following communications were read : — 



I. " The Absolute Direction and Intensity of the Earth's Magnetic 

 Force at Bombay, and its Secular and Annual Variations." 

 By Charles Chambers, F.R.S., Superintendent of the Colaba 

 Observatory. Received October 26, 1871 . 



(Abstract.) 



The observations discussed in this paper were taken at the Colaba Ob- 

 servatory during the years 186/ to 1870, and consist of observations of 

 Dip, Declination, and Horizontal Intensity. The principal results deduced 

 by the author from these observations are shown in the following state- 

 ment : — 



Magnetic element. 



Epoch. 



Value at 

 epoch. 



Value at 

 common 

 epoch, 

 January 1st, 

 1869. 



Secular 

 change. 



Per annum. 



Semiannual 

 inequality. 



Excess of 

 April to Sep- 

 tember over 

 mean of year. 



Calculated 

 probable 

 error of a 

 single 

 ■weekly 

 determi- 

 nation. 



Declination 



Dip 



April 1, 1868 

 Oct. 1, 1868 

 April 1, 1869 

 Jan. 1, 1869 



6 46 47 E. 

 19° 4'-2 

 8-0591 

 8-5264 



o , „ 



48 36 E. 

 19° 4 7 -7 

 8-0581 

 8-5264 



4-2 o 

 + l'-9 

 + •0040 

 + •0059 



// 

 + 1 



+0'-3 



•0000 

 + •0003 



// 



+20 

 +0'-25* 

 + •0043* 



Horizontal Force . 

 Total Force 



In column 2 is entered the mean epoch to which the mean value of each 

 element, entered in column 3, corresponds. 



The absolute observations were taken at a height of 38 feet above the 

 ground ; and by comparing them with observations taken with differential 

 instruments at a height of 6 feet above the ground, they are shotvn to in- 

 dicate distinctly a diminution of terrestrial magnetic action with increase of 

 height, with respect both to secular variation of Declination and Hori- 

 zontal Force, and to diurnal inequality of Horizontal Force. 



II. " On the Elimination of Alcohol." By A. Dupre, Ph.D., 

 Lecturer on Chemistry at Vrestminster Hospital. Commu- 

 nicated by W. Odlixg, M.B., F.K.S. Received November 

 16, 1871. 



(Abstract.) 



Obviously three results may follow the ingestion of alcohol. All the 

 alcohol may be oxidized and none be eliminated, or a portion only may be 



* In English units. 



K 2 



