EXPLANATOKY NOTES. 



In the following tables the coefficients of expansion given are always the 

 coefficients for one degree Centigrade. When the coefficient is followed by one 

 temperature, as, .00001188.40°, it is the true coefficient at that temperature. 

 When two temperatures are appended, as, .0001105, 0°-100°, the coefficient is 

 the mean value for any one degree between them. 



But few abbreviations, save in the references to original papers, have been 

 used. The letters S. or L., affixed to the mame of a substance, indicate that 

 it is either solid or liquid, as the case may be. The minus sign prefixed to a 

 coefficient, indicates that the letter represents contraction, instead of expansion. 



The following abbreviations are employed in referring to sources of infor- 

 mation, original papers, &c. A single number attached to the name of an 

 authority, refers to the paper bearing that number in the list accompanying 

 the tables. References to periodicals are followed by numbers giving (when 

 necessary) the series, volume, and page. 



Am. Chem. "American Chemist." 



A. C. P. "Annalen der Chemie und Pharmacie." 



A. C. Phys. "Annales de Chimie et de Physique." 



Baier Akad, Phys. Abhandl. "Baierisches Akademie. Physikalische 

 Abhandlungen." 



B. D. C. G. "Berichte der Deutschen Chemischen Gessellschaft." 



B. S. C. "Bulletin de la Societe Chemique." 



C. S. J. "Journal of the Chemical Society." 

 Gilb. Ann. "Gilbert's Annalen." 



Gren's J. "Gren's Journal." 



J. " Jahresbericht fur Chemie." 



J. F. P. "Journal fur Praktische Chemie." 



