iQternational Catalogue of Scientific Literature. 



(D.) CKI^MISTRY. 



0000 Philosophy. 



0010 History. Biog-raphy. 



0020 Periodicals. Reports of Institutions, Societies^ 

 Congresses, etc. 



0030 General Treatises, Text Books, Dictionaries, Biblio- 

 graphies. Tables. 



0040 Addresses, Lectures. 



0050 Pedagog-y. 



OOGO Institutions, Collections, Economics. 



0070 Nomenclature. 



Chemistry (Specific) of the Elements. 

 0100 General. 



Ai.L specifically chemical subject matter, and such other entries'- 

 as may be desirable, relating- to the elements generally excepting 

 carbon, shall be arranged under tliis heading. In the case of 

 carbon, such entries as concern the element or those of its com- 

 pounds -which are not treated as derivatives of hydrocarbous 

 (cyanogen, &c.) shall alone be included under this heading. 



The elements shall be arranged alphabetically in the order of 

 their symbols, and nundjertd from 0110 onwards as follows, the 

 appropriate symbol being ajipended to each number:— 



(d-0482) b 



