... from a flat surface. The lower slip is now fixed by one edge in the clamp forceps, and held ready in the left hand. The right handapplies the upper glass with the forceps b to the drop of blood ... from the puncture, and takes it up,without touching the finger itself. The forceps b is then quickly brought to a and the slip with the little drop ofblood allowed to fall lightly on the other. ... depends on the size of the drop, the smaller the latter, the smaller the surface over which it has to be spread. Large drops are quite useless, for with them, the one cover-glass swimson the other,...