BIBLIOGRAPHY — FLETCHER. 207 



Eryx, Girgenti, Syracuse, Catania, Centuripe, Taormina, Spadafora (an an- 

 cient brick-kiln in the vicinity), Tindari, Solunto, and Palermo. In western 

 Sicily and Syracuse (with the exception of the amphitheater) no traces of 

 concrete construction were found. In Centuripe, Catania, and Palermo many 

 remains exist showing the use of concrete construction by the Romans, while 

 the monuments of Taormina, especially the theater, are among the finest 

 brick-faced concrete structures as yet found. These monuments may, it is 

 hoped, throw some light on the question of the origin of the Roman con- 

 struction in general. 



The object of the fourth trip, from July 23 to August 8, was to determine, 

 if possible, the extent of and methods used in the concrete constructions in 

 the vicinity of Ancona, among the most important districts for the study of 

 the problems now in hand. The points visited were Rimini, Fano, Pesaro, 

 Ascoli Piceno, Urbisaglia, Gubbio, Spello, Terni, Narni, and Amelia, in all 

 of which places, except Fano and Pesaro, were found valuable remains in 

 concrete faced with stone or with brick. 



In connection with these trips, a list (as yet incomplete) has been made 

 of the most important centers where there exist Roman concrete remains, 

 showing the variations in material and technique from the concrete struc- 

 tures in Rome and its immediate vicinity. 



BIBLIOGRAPHY. 



Fletcher, Robert, Army Medical Museum, Washington, District of Colum- 

 bia. Grant No. 634. Preparation and publication of the Index Medicus. 

 (For previous reports see Year Books Nos. 2-8.) $12,500 



The volume of the Index Medicus for the year 1909 was duly issued. 

 Readers are cautioned that additional headings of subjects are made during 

 the publication of the volume to correspond to advances in pathology in 

 particular. For example, in a recent number the heading "Epidemic Polio- 

 myelitis" brings together the many indeterminate names for the prevailing 

 and alarming epidemic disease known to some extent as "infantile paralysis." 

 An interesting illustration of the world's progress is the citation in the pages 

 of the Index Medicus of medical periodicals in languages not previously 

 exhibiting works of the kind. Some of these may be mentioned : as, one in 

 the Catalan dialect, which curious tongue contains relics of the old Basque 

 language of primitive Spain; others are Bulgarian, Little Russian, Servian, 

 Slavonian, and even one of Esperanto ! 



