BIBLIOGRAPHY — CHEMISTRY. 24I 



of Excavations at Ostia, a systematic study has been begun of the extensive 

 concrete monuments laid bare by the recent excavations, which, on account 

 of their agreement in type with those of Rome, are of especial importance 

 in the present investigation. 



BIBLIOGRAPHY. 



Garrison, Fielding H., Army Medical Museum, Washington, District of 



Columbia. Grant No. 779, allotted December 15, 191 1. Preparation 



and publication of the Index Medicus. (For previous reports see Year 



Books Nos. 2-10.) $12,500 



At the completion of volume ix of the Index Medicus (1911), Dr. Robert 



Fletcher resigned his position as editor in chief, on account of his advancing 



years, as expressed in the following notice inserted in the Index Medicus 



for January 191 2: 



Over thirty years ago I was associated with Dr. John S. Billings, U. S. Army, in the 

 devising and publication of the Index Medicus, a journal unique in its plan and method 

 of issuance. The state of my health warns me to withdraw from this engrossing edi- 

 torial work, and my connection with it ends with the completion of the volume for 1911. 



It is with unalloyed satisfaction that I leave the Index Medicus in the charge of Dr. 

 Fielding H. Garrison, who has been for many years my able co-editor. 



In connection with the above, I desire to state that such ability and experi- 

 ence as I have for the duties devolving upon me are largely due to the 

 careful and rigorous training in bibliography which I have received at Dr. 

 Fletcher's hands and to the advantages which I have derived from his wise 

 counsel and superior scholarship during the fifteen years of my association 

 with him. 



The Index Medicus for 191 1 is a volume of 1,357 pages, exclusive of the 

 annual index, making an advance of 132 pages over the volume for 19 10. 

 As the output of medical literature seems continually to increase, the ques- 

 tion of limiting the selection of material for the monthly number will 

 naturally suggest itself at some future time. In spite of this increase, these 

 numbers have been issued with greater promptitude of late and it is hoped 

 that the Annual Index may be published next year before the end of June. 



No changes have been made in the monthly scheme of classification, which 

 has stood the test of time. On account of the remarkable increase in recent 

 literature bearing upon physiology and pathology of the ductless glands, 

 special places have been made for these subjects under appropriate rubrics. 



CHEMISTRY. 



Acree, S. F., Johns Hopkins University, Baltimore, Maryland. Grant No. 

 762, allotted Dec. 15, 191 1. Continuation of the study of tantomerism 

 and catalysis. (For previous reports see Year Books Nos. 4-10.) $2,000 

 Work on tautomerism and catalysis has been continued with the coopera- 

 tion of the collaborators named below. 



