240 PlBLD M k Natural History — Reports, Vol. III. 



:s. Tl if the Hall ar ist part, therefore, 



illustr of petri- 



rms has also been 

 hall. It The transference 



of the di rtunity for n 



merit improvi 



Tl Uectiofl there 



s of cys- 

 ; to the Siluri iea on ex- 



hil hundr 



• the I) ian. To the C aboul 



three hundn nted on tablets 



e. Tliis n tied 1 "or I 



most part from the collection purchased from Mr. Pultz. The Tria^ 

 ^ils were als 1 Hal! Hall : installed. I 



this rearrangement it was made possible to devote Hall 36 almost 

 wl Jurassic fossils. Two cases of Jurassic plants and inverte- 



■re reinstalled in this hall and two cases of Jurassic ichthyo- 

 1 one of Jurassic fishes transferred from Hall 59 to Hall 36. 

 The Cretaceous collections were moved to the east end of Hall 59 and 

 new Tertiary vertebrates and iir rates thus afforded room in 



their proper sequence. Among new specimens of Tertiary vertebrates 

 installed in Hall 50 may be mentioned two large nodules from the Loup 

 Fork 1 showing remains of the fossil horse Hypohippus in 



the matrix, and several skulls of recently purchased inian fossils. 



Two of the two-foot wall cases in Hall 61 were replaced by three-foot 

 cases and in them were installed tl ries of Titanotheres and some 

 other large skulls. Some rearrangements were also made of the floor 

 ex' in Halls 50, 60. and 61. In Hall 6 es have been pro- 



minerals that I fade on exposure 



t. These, alth they in e of the most showy and 



interesting specimens, had hithert necessarily kept in drawers 



The device pi 1 for each spec- 



which is hinged and 



•nen s> lude the light except 



s of levers connected with a 



■ se permits raising of the box by 



pr- the button the box drops back 



into plac :iecim< in. The specimens are thus 



- the moment when the visitor wishes 



