FIRST FLOOR 39 



Beyond the Wood Hall is the Hall of Invertebrate Zo6log>^ 

 (No. 107). On the north of the entrance is a section of California 

 redwood, and on the south a section of the Sequoia ^. ^ 



Big Tree, 



or "Big Tree," 16 ft. 8 in. in diameter. A Guide 



Leaflet entitled ' ' The Sequoia ' ' may be borrowed or purchased 

 from the attendant. 



The key-diagram at the entrance of the hall enables the 

 visitor to comprehend at a glance the arrangement of the col- 

 lections. The ' ' alcove ' ' plan has been followed strictly invertebrate 

 in the disposition of cases around the outer portion of Zoology, 

 the hall. These alcoves contain the synoptic collection of in- 

 vertebrates, and by beginning in the northwest comer and going 

 from left to right around the hall one passes from the lowest to 

 the highest forms of animal life. The exhibition of micro- 

 scopical animals, in Alcove I, will warrant careful examination. 

 The Sponges in Alcove H have exquisite beauty. In Alcove 

 III are excellent models of living coral-forming animals. Special 

 exhibits have been placed in the center of the hall. Among the 

 most interesting specimens are the models of the Giant Squid 

 and Octopus, two large corals, models of the development of 

 Crepidula egg, and an exhibit showing the life history of Mosqui- 

 toes and their relation to malaria. On the south wall hangs a 

 specimen of the Giant Spider Crab from Japan. 



The Tower Room, opening out of this hall, contains a special 

 exhibit of stony corals, largely the gift of Mr. Percy R. Pyne. 



The visitor will now retrace his steps through the Wood 

 Hall to the East Corridor (No. 105), where he will find displayed 

 the Jesup Collection of Building Stones. The main 

 portion of this series consists of four-inch cubes dupli- Jesup 



eating the collection made for the United States Na- stones, 

 tional Museum in connection with the Tenth Census. 

 The specimens are arranged geographically according to the 

 States from which they came, and under each head they follow 

 the same grouping, granites and other crystalline rocks, sand- 

 stones, limestones and marbles being placed together. The 

 eight-inch cubes on the tops of four of the cases form an exhibit 

 of the various building stones occurring in Georgia. 



