Laboratory Procedure. 



0900 General. 



0910 Plans, fitting-s, appliances and apparatus. 



0920 Lecture apparatus and experiments. 



0930 Operations in inorganic chemistry. 



Entries under 0930 shall be made under headings such as 

 dissolution and solvents, crystallisation, distillation, sublimation, 

 reduction by hydrogen, &c., oxidation, electi'olysis, furnace 

 operations, &c., arranged alphabetically. 



Organic (Carbon) Chemistry. 



1000 General. 



All entries relating to the subject generally shall be arranged 

 in this division under 1000, excepting those relating to carbon 

 itself or to compounds not usually regarded as derivatives of 

 hydrocarbons. 



Substitution derivatives of the compounds included in each of 

 the numbered divisions — especially haloid and allied derivatives 

 formed by the introduction of monad radicles — shall, as far as 

 possible, be entered under the compounds from which they are 

 derived. 



Entries under the name of a substance may, if necessary, be 

 subdivided in the manner provided for inorganic substances. 



In preparing the slips, and whenever the name of the com- 

 pound is ambiguous, or not likely to suggest the constitution, 

 the structural formula should be added. This is chiefly to assist 

 the Editor. 



Hydrocarbons. 



1100 General. 

 1110 Paraffins. 



1120 Unsaturated open chain hydrocarbons. 

 1130 Benzenoid hydrocarbons. 



1140 Reduced benzenoid hydrocarbons. Cyclic hydro- 

 carbons other than benzenoid hydrocarbons. 

 (Ter penes, Sec.) 

 1150 Unclassified hydrocarbons. 

 Each of these divisions shall be subdivided (excepting 1100 and 

 1110) into isologous groups, iu each of which compounds shall 

 be entered in homologous order. 



Haloid and allied substitution derivatives shall be entered 

 under the corresponding hydrocarbon. 



Tn preparing the slips for 1120 to 1150, after the registration 

 letter and registration number, the empirical or, if possible, the 

 structural formula of the hydrocarbon shall be given. Then 

 should follow the name of the hydrocarbon, and, in the case 

 of substitution products, the symbols of the substituting groups, 

 CI, CN. NO,, &c. 



