156 Mr Adami, On the disturbances of temperature [Mar. 9, 



for all small variations of the point (x, y, z), it involves the three 

 relations 



dx dx' dx ' ' 



?!:=§£ p + h n 



dy dy' dy ' 



dz dz' dz' 



Hence it follows that 



Vr = Vp . P + Vq . Q, 

 so that if Vp = and V^ = 0, we have Vr = also.] 



[It is to be remarked that a theory similar to the one 

 established in the above paper can be constructed for the equation 

 discussed in Art. 5 of my former paper, by choosing for the 

 elementary solutions the expressions 



x — it, y —jt, z — kt. 



April 27th, 1891.] 



March 9, 1891. 



Dr Lea in the Chair. 



H. G. Dawson, M.A., Christ's College, was elected a Fellow of 

 the Society. 



The following Communications were made to the Society: 



(1) On the disturbances of the body temperature of the fowl 

 which follow total extirpation of the fore-brain. By J. George 

 Adami, M.A., M.B., Christ's College, John Lucas Walker Student 

 in Pathology. 



[Abstract; received May 8, 1891.] 



In the course of a series of experiments, undertaken at Paris, 

 upon the development of fever by means of aseptic solutions 

 of the products of bacterial growth it became important to take 

 into consideration how far the various phases of the febrile state 

 depend upon the action of the higher nervous centres; to see 

 whether a typical fever can be induced when the cerebral hemi- 

 spheres have been removed, and to investigate the terms of 

 relationship between ' the heat-centres ' (if these have a local 

 existence) and the altered conditions of heat production and 

 the giving off of heat which obtain during the febrile state. 



