When heating or mixing chemicals in a test tube never look directly into it.
Gruber and Durham showed that sedimentation occurred when a small quantity of the homologous serum was added to an emul:_on of the bacterium in a small test-tube, and found that this obtained in all cases where Pfeiffer's lysogenic action could be demonstrated.
Down the inner test tube pass four copper strips having platinum wires at their ends sealed through the glass.
"Imperfects." These failed test-tube babies will become your greatest adversaries while you play through a couple dozen levels of not-so-hotness with a cast of characters.
In the "diffusion column" method, a liquid column uniformly varying in density from about 3.3 to I is prepared by pouring a little methylene iodide into a long test tube and adding five times as much benzene.