LABORATORY EQUIPMENT FOR CHEMISTRY


 f. Fire Protection. One of the small hand-pump fire ex-
tinguishers is a great protection. A light blanket, rolled tightly
and hung on the wall where it can be quickly snatched down,
will be available for putting out any fire on clothing.
 g. Aprons of an acid-proof kind are decidedly advisable.
 As you prosper, you will improve many items of this labora-
tory furniture, both for the sake of more convenience and be-
cause of your pride and desire for something better. You will
place uniform bottles upon the students' shelves, and build
closed compartments in your storage space; you will build or
buy desks with drawers and lockers; you will install plumbing,
with at least one sink in the room.
2. APPARATUS FOR THE SIMPLEST CHEMICAL LABORATORY
 You do not have to have everything to start your laboratory;
all items of apparatus are not alike indispensable. Neither is it
necessary to buy on the basis of "so many of this article for ten
students" and twice as many for twenty, which your manual
implies. I have divided the apparatus into groups, and listed
these in the order of the most urgent need for the simple labora-
tory. I have done this by writing out a list of all the things I
would have in a generously equipped laboratory, then eliminat-
ing each item for which I could think of a satisfactory sub-
stitute.
 This list plans for several years of a struggling infancy. Try,
for the first year, to have everything in List A, and one or two
of each item in List B, with which you may demonstrate. Next
year have a supply of Lists A and B for students, and some of
List C for your own use. Grow into List D, which represents
the beginning of better days; but I am not writing for the pros-
perous laboratory.
 In the interest of economy, allow your students to work in
pairs, and let there be many demonstrations, both by yourself
and by students, which the whole class may observe. I have
placed beside each item the number of students which it should
serve, if you will foster the spirit of community cooperation
rather than private ownership of apparatus. Thus, by dividing