I9I5] R' H. A. Flimmer 4^7 



CAL Chemists. I. Ordinary meeting: held at the Chemical So- 

 ciety's rooms, Burlington House, London. Mr. A. Chaston Chap- 

 man, President, in the chair. 



The following were elected members of the Society: 



Honorary Members — Sir William Crookes and Prof. Meldola. 



Ordinary Members — Messrs. Paul Seidelin Arup, Francis How- 

 ard Carr, Alexander Scott Dodd and Harri Heap. 



Certificates were read for the first time in favour of Prof. Arthur 

 William Crossley, Mr. Daniel James Davies, Dr. Martin Onslow 

 Forster, Prof. Herbert Jackson, Mr. Frederic Ion Richardson, Prof. 

 William Jackson Pope, Prof. James Charles Philip and Mr. George 

 Henry Warburton. 



2. The ordinary meeting was followed by a Joint meeting of 

 The SOCIETY of public analysts and other analytical chem- 

 ists^ AND THE BiocHEMiCAL SOCIETY. Mr. A. Chaston Chapman, 

 representing both Societies, in the Chair. 



The Meeting was devoted to a discussion on " Methods adopted 

 in the estimation of the nitrogenous constituents of extracts derived 

 from'albuminous substances, such as meat extracts and similar prod- 

 ucts, with special reference to the interpretation of the results." 



The discussion was opened by the Chairman {Mr. Chapman), 

 who drew attention to the necessity of dividing the products of pro- 

 tein hydrolysis into certain groups or categories for analytical pur- 

 poses. From the technical point of view the purposes to be served by 

 such analyses were, firstly, to indicate the general character of the 

 process by which any particular extract had been prepared ; secondly, 

 to throw some light on the source of the extract and its genuineness 

 or otherwise; and lastly to furnish Information as to the physio- 

 logical properties or dietetic value. The bromine method, properly 

 applied, precipitated gelatine, gelatine-peptone, syntonin, albumoses 

 and peptones, but not Creatinine or other ' meat-bases.' Saturation 

 of the Solution with zinc sulphate in presence of a little acid might be 

 resorted to for the purpose of separating the albumoses from the pep- 

 tones ; and this process, although its results were not very definite, 

 might be useful in so far as it threw some light on the extent to which 

 the original protein matter had been hydrolysed. Bigelow and Cook, 

 in the United States, precipitated the albumoses and peptones by 



