Vll 



Page 



On a New Form of Febrile Disease associated with the presence of an 

 Organism distributed with Milk from the Oldmill Reformatory School, 

 Aberdeen. By J. C. Ewart, M.D., Professor of Natural History in the 

 University of Aberdeen 492 



List of Presents 498 



On Gravimeters ; with special reference to a Torsion Gravimeter, designed 

 by the late J. Allan Broun, F.R.S. By Major J. Herschel, RE., 

 F.R.S., Deputy-Superintendent of the Survey of India. (Plates 8, 9).... 507 



On the Coefficients of Expansion of the Di-iodide of Lead, Pbl?, and of 

 an Alloy of Iodide of Lead with Iodide of Silver, PbLAgl. By G. F. 

 Rodwell, F.R.A.S., F.C.S., Science Master in Marlborough College 540 



Index t 553 



Obituary Notice : — 



Michel Chasles i 



