342 CARNEGIE INSTITUTION OF WASHINGTON. 



trolling factor. The monuments of the second class, on the contrary, 

 in their type of construction show but slightly the influence of local 

 methods. Among the monuments of this class, those of Italica, 

 which are assigned to the periods of Trajan and Hadrian, who were 

 natives of this city, are of especial interest, since the methods of 

 construction are identical, except in a few details, with those used in 

 Italy at the same time. The monuments seen differ markedly from 

 those of southern France in the absence of any traces of the strong 

 Greek influence so clearly recognizable in the latter. 



The spring and early summer of 1916 were devoted to the regular 

 work of examining and classifying the remains of the ancient monu- 

 ments in Rome, especially those belonging to the late republic and 

 early empire, in which opus quadratum, or cut-stone masonry, appears. 

 For the classification of these monuments a more thorough study was 

 found necessary of the types of opus quadratum used in general in the 

 various periods. An independent examination was undertaken, 

 therefore, of the greater monuments of fixed date in which it appears, 

 either alone or in combination with opus ccementicum, with a view 

 to establishing, if possible, some general rules concerning its use. 



On account of the absence from Rome of many of the workers in 

 the various fields of archeological research or their absorption in 

 other necessary Unes of activity, the investigation of a number of 

 important problems along archeological and topographical lines, 

 which was so auspiciously begun, has been for the most part suspended; 

 but in connection with the Associate Director of the British School, Mrs. 

 Arthur Strong, an exhaustive study of the construction and mural 

 decoration of the so-called poedagogium and the adjacent building on 

 the Palatine has been in part completed. So far as at present decided, 

 the remains of this group of structures belong to at least four periods. 

 Some important discoveries have been made also in the group of rooms 

 forming the lower stories of the "Domus Tiberiana." 



In connection with the work in these difficult times the courtesy and 

 kindness of the Italian Government and of its various officials have 

 been unfaiUng. 



