Section 35. the Blood (figure 4, Sheet 2) Is Not Homogeneous;

under the low power of the microscope it may be seen to consist of--

(1.) a clear fluid, the plasma, in which float--

(2.) a few transparent colourless bodies of indefinite and changing shape, and having a central brighter portion, the nucleus with a still brighter dot therein the nucleolus-- the white corpuscles (w.c.), and

(3.) flat round discs, without a nucleus, the red corpuscles (r.c.), greatly more numerous than the white.