No. 51.— 1900.] 



ANNUAL REPORT. 



157 



It is impossible yet to fix the rates of subscription to the catalogues, 

 but the scheme drawn up by the Royal Society's Committee provides 

 for subscription to the slip catalogue and the book catalogue separately, 

 both of which will be issued in parts devoted to the whole of a 

 registered science when its literature is limited in amount, or to a 

 special section of a science when its literature is extensive and capable 

 of convenient subdivision. The Regional Bureaux will, later on, be 

 provided with the scale of subscription, when steps will be taken to 

 inform individuals or institutions likely to subscribe. 



The preparation of the catalogue will date from January 1, 1900. 



Abridged Schedule of Classification for Chemistry.* 

 Ch e m ica I Bibl iography. 



0000 Philosophy. 

 0010 History. 

 0020 Biography. 



0030 Dictionaries, collected works, text-books. 

 0040 Pedagogy. 



0050 Addresses, lectures, essays, and theses. 



0100 Chemistry (Specific) of the Elements, to include all entries 

 relating to the elements generally, or which cannot be 

 referred to any one of the known elements. 



0110 Aluminium. 



0120 Antimony. 



0130 Argon, followed by the other known elements at similar 

 * numerical intervals and arranged in alphabetical order up 

 to— 



0840 Zirconium. 



Entries made under any element maybe further subdivided accord- 

 ing to the nature of the compounds in which they occur, and are 

 arranged into five further sections in such order that the entries 

 relating, a, to the history or origin of the substance shall come first, 

 followed by, (3, its preparation or manufacture ; y, its structure, or 

 theoretical nature ; S, its interactions or use ; and e, its compounds. 



0900 Laboratory Procedure. 



1000 Organic (Carbon) Chemistry (Specific). 



1010 Hydrocarbons generally, with the following recognized 



groups — 

 1020 Paraffins. 



1030 Unsaturated open chain hydrocarbons. 

 1040 Benzenoid hydrocarbons. 



1050 Reduced benzenoid hydrocarbons (terpenes, &c). 

 1060 Unclassified hydrocarbons. 



When necessary these groups of hydrocarbons are further sub- 

 divided into isologous groups, in each of which the compounds are 

 entered in homologous order. 



1100 Alcohols and Ethers with subdivisions as in the case of 

 hydrocarbons ranging from 1110 to 1150. 



* From the Report of the Royal Society Committee, March 30, 1898. 

 The numbers employed to distinguish the subdivision are sufficiently 

 separated to admit the interpolation of new subdivisions as the subject 

 expands. 



d2 



