Report of the President 7 1 



years to complete. Their installation will involve more exhi- 

 bition space than is at present available. 



The series of skeletons of the great "Clawed Ungulate" 

 Moropus was increased by the taking up of prospects which 

 had been located but not collected last year. From this series, 

 collected by Mr. Albert Thomson, it is intended to select, when 

 the material has been completely prepared, a set of three or 

 four, representing male, female and juvenile stages, as part of 

 the group of fossil skeletons planned to occupy the center of 

 the Tertiary Mammal Hall. 



A series of skulls and partial skeletons of the South African 



_ , ., . , Permian reptiles have been placed on 



New Exhibits and , .... , , , , ^ c **■ 



- - — - „ . exhibition, and three skeletons of Mos- 



Study Collections . 



chops, one of the largest and most 



remarkable of these very ancient reptiles, are being prepared 

 for a group mount. 



Preparation and mounting have been vigorously pressed 

 upon the large series of Cretaceous dinosaurs obtained by 

 recent expeditions. The mounting of one of the skeletons for 

 the Tyrannosaurus Group is well-nigh completed and will afford 

 a magnificent illustration of the gigantic Carnivorous dinosaurs 

 of the Cretaceous Period. Owing to lack of space in the 

 Dinosaur Hall, this skeleton will for the present be placed in 

 the Pleistocene Mammal Hall. The skeleton with skin of the 

 new Duck-bill Dinosaur Corythosaurus is also well towards 

 completion; this mount has involved mechanical problems of 

 peculiar difficulty, owing to the necessity of exhibiting the 

 skin of both sides of the animal, and the extreme fragility 

 and shattered condition of certain parts of the specimen, 

 combined with the great size and weight of the entire block. 

 Two fine skulls, believed to represent male and female, of the 

 primitive Horned Dinosaur Ceratops have been placed on exhi- 

 bition. A series of partial skeletons of the Armored Dinosaur 

 Ankylosaurus have been prepared. 



In contrast with the preparation of dinosaur specimens, 

 whose difficulties in technique arise chiefly from the gigantic 

 size of the skeletons, is the very skilful preparation work done 

 by Mr. Anderson upon the earbones and other minute and 



