that of the north wing.

Finally, in the center of the main building is a wing parallel with its
two mates. It is in this that is located the vast staircase that leads to
spacious landings at which ends on every story a large corridor common to
all the halls and workshops. It is in this part of the building that we
find the amphitheater of physics and chemistry and the laboratories. Here
also is located the museum in course of formation (gotten up in view of
the historical study of watch-making), and the amphitheater designed for
certain public lecture courses.

In the way of heating and lighting all parts of the building nothing has
been neglected, and special care has been taken to have the ventilation
perfect.

At present the instruction comprises a practical and a theoretical course.

_Practical Instruction_.--This is divided into three sections: (1) an
elementary one having in view the construction of the simple watch in its
essential parts; (2) a higher section in which the pupils learn to
recognize the complicated parts; and (3) a section of mechanics applied to
watch-making and to the study of the construction of machines and tools
for facilitating and improving the manufacture.

1. _Elementary Section, First Year_.--The pupil must manufacture all the
small tools necessary for making unfinished movements; that is, drills,
reamers, punches, files, etc. He must then learn to file and turn, and to
make use of the finishing lathe with the bow, or of the foot lathe.

In general, the time taken by an apprentice to manufacture his tools is