390 Field Museum of Natural History — Reports, Vol. IV. 



by the Buttercup and the Akebia families and another the Barberry and 

 the Moonseed families; and three cases representing the botany and 

 products of the Monkey-pot and the Pomegranate families. 



In the Department of Geology two large mounts have been installed 

 in Hall 36. One of these is the large Leptomeryx slab described in last 

 year's report. This has been installed in a floor case of standard type, 



X feet in size, in which it makes an effective and attractive 

 exhibit. The other large mount installed is a skeleton of a Cave Bear 

 from Triest, Austria, which has been placed in a temporary case. The 

 skeleton is remarkable for its large size and completeness. In connec- 

 tion with the installation of these mounts some rearrangement of the 

 other cases was made. There were also added to the exhibition series 

 of fossil vertebrates a skull of Aceratheriimi and one of Ancodon, 

 complete skeletal fore and hind legs of the fossil camel Oxydactylus 

 and a skeletal hind leg of Alticamelus. The two large fossil logs from 

 Patagonia, collected by Professor Salisbury, have been installed in 

 this Hall. One of these logs is eight feet in height and two feet in 

 diameter and the other is nearly as large. The structure of the wood 

 is beautifully preserved and the evidences of former tree growth are 

 so unmistakable as to make them impressive specimens. The large 

 slab of Uintacrinus, which has for some time been exhibited in this Hall, 

 was found to be undergoing considerable disintegration owing to im- 

 perfect adherence of the slab to the plaster backing. It was therefore 

 taken down, the thin exhibition surface removed and carefidly scraped 

 and readjusted. This was then remounted on a firm plaster bed. By 

 this means a permanent adherence of the slab to the plaster has been 

 obtained and a durable and attractive mounting achieved. In Hall 32 

 the large specimen of Orthoceras from Troygrove, Illinois, and a number 

 of smaller specimens were installed and some minor rearrangements 

 made. In Hall 30 a series of models showing the diamonds cut from the 

 Cullinan diamond has been placed in connection with the model of that 

 diamond. In the same Hall a large number of mineral specimens have 

 been added to the series on exhibition, less important specimens having 

 been removed wherever necessary to provide room. The series added 

 includes a nimiber of new species or occurrences that have been acquired 

 in recent years, so that all important mineral specimens may now be 

 considered to be on exhibition. In Hall 31 the series of lavas and vol- 

 canic products has been thoroughly rearranged in geographical groups 

 and a number of specimens added. The additions include the series of 

 specimens from the Japanese volcano of Sakurajima. The series of 

 concretions, faults, and veins in this collection was also rearranged and 

 some additions made. Some marcasite stalactites which had begun to 



