206 REPORTS ON INVESTIGATIONS AND PROJECTS. 



sitions of the museum, also pursuing linguistic and ethnologic studies in the 

 interesting negro quarter of the Egyptian metropolis. Studies in the field 

 were begun in August, and were pursued especially at Thebes, where the 

 vast temple of Amon still yields not only new details of inscriptions and pic- 

 tures, but some of the largest inscriptions known. Dr. Miiller continued the 

 collection of ancient ethnographic pictures. His work at Philse was left for 

 the second half of September. Much valuable material here has been washed 

 away within the last couple of years, but some good pieces are left for 

 copying. 



Esther B. Van Deman, Rome, Italy. Grants Nos. 565 and 640. Researches 

 in Roman Archeology. (For previous reports under auspices of Roman 

 School see Year Books Nos. 6, 7, and 8.) $2,200 



The months of July, October, and November, 1909, were spent largely in 

 arranging the data already collected and in the preparation, from this mate- 

 rial, of a working outline of the Handbook on Roman Concrete Construction. 

 In December the regular study of the monuments was resumed ; the greater 

 part of the time, until April 15, was devoted to the monuments belonging 

 to the more difficult periods, namely, those of the late Republic and Augustus, 

 and of the late Empire. In connection with the earlier periods it became 

 necessary to determine the levels of the Forum and Palatine and the dates 

 to be assigned to each, in order to classify more certainly the materials found 

 at the various levels. The work in the Forum, which is almost completed, 

 has yielded many results important for the topography of the region (includ- 

 ing the location of several monuments as yet unplaced) as well as for the 

 subject in hand. The work on the Palatine has been postponed, in view of 

 the expected publication of a set of measurements made under the direction 

 of the government. 



During March much light was thrown upon the construction of the Roman 

 vaults by the valuable suggestions of Miss Gertrude Bell, whose work has 

 included a study of that subject in the East. 



During the fourteen months four trips have been made. The first of these, 

 from the 5th to the 20th of August 1909, included brief visits to Potenza, 

 Bari, Brindisi, and other points in southeastern Italy. The results were 

 wholly negative, since no traces of the use of concrete by the Romans were 

 found. 



The second trip, in addition to two weeks of rest in Switzerland, included 

 the study of the monuments in Aosta, Como, Milan, Macerata {Helvia Re- 

 tina), Urbisaglia, Tolentino, and Cagli. The principal result was the dis- 

 covery of a type of Roman concrete and brick construction in Italy distinct 

 from that found at Rome, and which influenced directly the medieval con- 

 struction in the same districts. 



During the month from April 15 to May 18 the leading ancient sites of 

 Sicily were visited. Among these were Segesta, Selinunte, Trapani, Mount 



