New s1and magni–
fier permi1s detailed
observations of the
of rock, mineral and
Study the structure of crystals
!.earn to identify earth's el.ements
Analyze the content of rocks by using real test chem–
icals. Plastic stand magnifier has wide-range focusing
arm .. ideal for indoor or "field trip" use. This big set
contains 30 rock and mineral specimens
compartments for easy removal, non-spill alcohol lamp
with blowtorch, chemicals, streak plate, test tubes
and charcoal block. 144-page illustrated manual. Stand–
up 3-panel metal cabinet, 29x13 in. open.
49 N 2101-Shipping weight 9 pounds ........... .$9.88
Figure math probl.ems on real-working
ancient abacus or modern slide rul.e
the equipment to make math actually fun •. helps
you solve problems fast. Excellent manual provides
short cuts, arithmetic problems. Set contains abacus,
slide rule, protractor, compass, ruler, draftsman's pen–
two angles, modeling compound and tangrams to
make geometric designs, spheres, pyramids, etc.
79 N 2132C-Shipping weight 3 pounds...........$5.88
Add to your set a chemical agitator
(order 1 "C" battery, facing page),
crime detection kit, centrifuge, hy–
drometer, scale, wash bottle, chemical
rocket, secret-writing pen.
79 N 2241 C-Shipping wt. 3 lbs•.
learn lab techniques
Lionel-Porter Biocraft Kit
includes detailed manual
Youngsters can learn elementary biology in classroom-like man–
fish, crayfish and starfish. Includes
scalpel, surgical scissors, forceps, spatula,
metal microscope at right. Also shrimp hatchery, slide prepara–
tion kit, glass
methylene blue stain, rack, plant seeds,
diatomaceous earth, feather, manual. Stand-up metal cabinet,
listed. 110-120-v., 60-c. AC.
N 2099-Shipping weight 10 pounds.......•.........$15.66
Even this low-priced
has 3-lens microscope
scope bas 60, 180, 425-power
lenses. Has frog, crayfish,
clam, scalpel, forceps, dissect–
ing needles. Dried bugs, flies,
shrimp eggs, stain, dropper,
diatomaceous earth, manual.
"C" battery below.
Metal cabinet, 21x13 in. open.
"C" Battery. Wt. ea. 2
49 N 4665-Ea. .. 16c;
Add to your microscope set dissecting
instruments plus 4 animal specimens:
frog, crayfish, worm, fish. Also shrimp
eggs ready for hatching, plant seeds,
microtome for sectioning, manual.
49 N 6364-Shpg. wt. 1 lb. 8 oz. . $4.95
thill set bas 3-nose turret
180 and 450-pow–
er lenses. Power
tates 360° for viewing
from any sjde of micro–
scope. Aperture control.
Gear focus adjustment.