230 



Let y be the mean anomaly ; 



<p be the angle of excentricity ; 

 i be any positive integer number. 



Put \3~ tani, u={cos^i, 

 ' 2 ^ 2 



&c. 



Then the Equation of the Center 

 = (l-/3^2)2«2|p. ^ ^3._^P.^^ _ ^ ^3.+ 



The analysis which has led me to this, and the form of this result, 

 are by no means peculiar to the Equation of the Center only, but apply 

 to all functions which it is necessary to develope in series proceeding 

 by sin ig or cos ig. 



2. " An Experimental Inquiry undertaken with the view of ascer- 

 taining whether any, and what signs of Current Force are manifested 

 during the organic process of Absorption (Lacteal) in living ani- 

 mals." — Part II. By H. F. Baxter, Esq. Communicated by Dr. 

 Todd, F.R.S. &c. Received October 29, 1852. 



In the experiments related in this paper, it is shown that when the 

 electrodes of a galvanometer are brought into contact, one with the 

 mucous membrane of the intestine, and the other with the chyle 

 ilowing from the lacteal of the same part, an effect upon the needle 

 occurs indicating the chyle to be positive. The effects may be partly 

 due to the changes which take place during secretion, the mesentery 

 acting as a conducting body ; this supposition however will not 

 negative the conclusion that the effects may be attributed, in some 

 measure at least, to the changes which occur during lacteal ab- 

 sorption. 



3. " An Experimental Inquiry undertaken with the view of ascer- 

 taining whether any, and what signs of Current Force are manifested 

 during the organic process of Assimilation in the Muscular and 

 the Nervous Tissues in living animals." — Part III. By H. F. Baxter, 

 Esq. 



§ I. On the existence of Current Force in the Muscular Tissues. 



After relating the conclusions arrived at by Matteucci in refer- 

 ence to the origin of the muscular current, the author endea- 

 voured to obtain more direct evidence by forming a circuit between 

 the muscular tissue and the venous blood ; the effects however were 

 but slight, they nevertheless indicated the tissue and the venous blood 



