PUBLICATIONS OF THE ROYAL SOCIETY 277 



informed the Society that the * " Catalogue of Scientific Papers " would not be 

 continued as a publication of the Stationery Office '. Parliament voted, how- 

 ever, a gift towards the charges of publication, and a portion of this gift, 

 supplemented by the Royal Society's own funds, was devoted to the issue of 

 vol. 9, which the Cambridge University Press, aided by a subsidy from the 

 Society, published in 1891. The question how to meet the expense of future 

 volumes was, however, still an unsolved problem until in December 1892 

 Dr. Ludwig Mond, F.R.S., made the Society the handsome donation of 0^2,000 

 to assist in carrying on the Catalogue and Index. Partly by aid of this gift, 

 vol. 10 was published in 1894, and vol. 11, completing the decade 1874-83, in 

 1896. 



In addition to the foregoing volumes, the President and Council in 1902 

 issued a supplementary volume, in which were catalogued all the most impor- 

 tant papers that appeared from 1800 to 1883 in periodicals not hitherto indexed. 



The question of a Subject Catalogue had been often considered, and the 

 Society at an early stage had embarked on a Subject Index to the main Catalogue 

 arranged under names of authors. The preliminary preparation of the copy, 

 involving the reduction of all the titles to one language, and the scheme of 

 classification, were long under consideration. A portion of Dr. Ludwig 

 Mond's gift, which has been mentioned above, was devoted to this branch of 

 the work ; and in June 1894 he supplemented this important aid by the 

 still more munificent promise to contribute one-half of the total expenditure 

 upon the Index in excess of that portion of his former gift already devoted 

 to this purpose, provided the Society or others were willing to contribute 

 the remainder of the cost (see p. 197). By this means it was hoped that the 

 Index to the Catalogue would in due time become an accomplished fact, and 

 that thus the whole series from 1800 to 1900, under Authors and Subjects, 

 would be completed. The President and Council had thus virtually under- 

 taken to complete this Catalogue up to the end of the nineteenth century, 

 from which date its purpose is continued by the International Catalogue of 

 Scientific Literature elsewhere referred to (p. 294). 



The expense of this work, arising from the enormous increase in scientific 

 publications during the latter part of the century, would have been beyond 

 the unaided financial resources of the Royal Society. The task could not 

 have been contemplated, notwithstanding the great amount of time 

 ungrudgingly given to helping on the undertaking by many of the 

 Fellows and others, had it not been for the liberal donations received 

 from several sources, especially from Dr. Ludwig Mond. It is esti- 

 mated that the completion of the Catalogue of Authors will entail at least 

 eight additional volumes closely printed in quarto ; while the indexes for the 

 seventeen sciences in the scheme of classification adopted in the International 

 Catalogue, extending over the nineteenth century, will amount to not less 

 than thirty volumes royal octavo. 



