Heliotropic Chamber

For experiments in phototropism with seedlings. Three-chambered

case of wood with to accept a variety of shutters. The right-hand chamber has windows in the

top and back end, when used with a clear front window, acts as a control chamber. Supplied

with opaque shutter, a slot shutter to admit light from one direction only, the clear windows for

the control chamber, one orange and one blue filter to show the effect of excluding various

parts of the spectrum. Complete with three glass containers for seedlings