Copy 2 of DOC - Caltechcampuspubs - California Institute of ...

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THROOP HALL
Throop Hall, the central building on the campus, was erected
in 1910, the gift of a large number of donors, and the first building
of the present group. It now contains the offices of administration,
the class rooms and drafting rooms of the engineering
departments, and some of thc engineering laboratories.
NORMAN BRIDGE LABORATORY OF PHYSICS
The Norman Bridge Laboratory of Physics, the gift of the
late Dr. Norman Bridge of Chicago, consists of two units of
five floors each, connected at the north by a third unit of two
floors, so as to form three sides of a hollow square. One of these
units has in addition a special photographic laboratory on a
partial sixth floor, and each has on its large flat roof excellent
facilities for outdoor experimentation.
The first unit contains a lecture room seating 260 persons, two
large undergraduate laboratories with adjoining dark rooms and
apparatus rooms, three classrooms, three laboratories for advanced
instruction, nine offices, a stock and chemical room, the
graduate library of physics, and twelve research rooms, besides
shops, machinery, switchboard, and storage battery rooms.
The second unit is used primarily for research. It contains
forty-five research rooms as well as a seminar room, photographic
dark rooms, a chemical room, fourteen offices, and switchboard.
storage-battery, electric furnace and machinery rooms. On the
second and third floors of this unit of the Norman Bridge Laboratory,
is housed, temporarily, the Division of Geology and Paleontology.
The third unit houses on one floor eight more research rooms.
thus bringing the number of rooms devoted exclusively to re-