1168 EFFECTS OF HEAT OH HALOID COMPOUNDS OF SILVER, ETC. 
(a) To diminish the coefficient of expansion below 124° C. to *00000636. 
(b) To annul the coefficient of expansion between 124° C. and 153° C. 
(c) To produce contraction on heating between 153° C. and 225° C., viz.: through 
72° C. 
(d) To produce a coefficient of expansion above 225° C. almost identical with that 
of iodide of silver. 
Plate 96 shows the effects of heat upon the copper-silver iodide alloys. 
Professor M. Bellati and Dr. B. Bomanese, of the University of Padua, have 
lately determined the specific heat, and heat of transformation, of the iodide of silver 
and the copper-silver iodides above described, using for their determinations the 
same specimens as those with which I worked, and which were forwarded to Padua 
at their request. Their results are given in this volume (page 1169). 
I beg to express my indebtedness to the Boyal Society for several grants which it 
has allowed for the prosecution of these researches. 
