SCIENCE CLUBS 75

required experiments. Where intense heat is needed, the gasoline
blow torch may be used.
 In arranging the fixtures in the laboratory, great care should
be used in placing them so that students will not have to crowd
past each other to obtain needed materials. Blackboards should
not be placed in crowded space.
 A fume hood in a high school laboratory is a convenience, al-
though not a necessity. Its vents should be open, and its fan (if
any) in working order. It should be used primarily for pouring
ammonia and hydrochloric acid, and for generation of chlorine
and hydrogen sulfide gases. If the laboratory has no hoods, these
offensive fumes should be set free near open windows. No ex-
ceedingly dangerous gas (as cyanogen) should be generated in
any high school experiment.
 Science teachers should be conscious of the danger of fire in
the laboratory. An extinguisher should be available, and its use
demonstrated to each new science class. A bucket of sand is
useful for certain types of fires, as from alcohol or oil. The
teacher should decide exactly what he would do if a student's
clothing is set ablaze-and should hope this never happens.
 The First Aid cabinet, or shelf, should contain a few useful
and familiar antiseptics and bandages for cuts and burns, rather
than a complicated assortment of remedies. Responsible stu-
dents, as well as the teacher, should learn the art of neat first aid
dressings. A demonstration of these techniques by a nurse or
doctor should be made near the beginning of each laboratory
course.
 The most common accident in the laboratory is the spilling of
strong acid or alkali on skin and clothing. "Water first!" is
the rule on such occasions. A length of rubber tubing that fits
over a faucet will permit a prompt dousing of the victim of
such misfortune. For after-treatment a quart of strong soda
solution should be available on the first aid shelf.

 SECTION 10. SCIENCE CLUBS
 Science clubs are designed to strengthen instruction, to pro-
vide an outlet for developing individual interests, to promote