FIRST FLOOR 39 
Beyond the Wood Hall is the Hall of Invertebrate Zodlogy 
(No. 107). On the north of the entrance is a section of California 
redwood, and on the south a section of the Sequoia 
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 Zodlogy. 
the hall. These alcoves contain the synoptic collection of in- 
vertebrates, and by beginning in the northwest corner 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 II 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. 
Big Tree. 
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 
cating the collection made for the United States Na- ee 
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. 
