148 RIKER: ORIGIN OF CHONDRIOMES IN CHARA 
Explanation of plate 3 
e figures were drawn with a Bausch and Lomb 1.9 objective and ocular 10° 
tube length 160 mm., with a camera lucida. The slides, from which the figures were 
drawn, were stained with Flemming’s triple stain. The magnification is about 1300 
diameters. 
IGS.1,2. Prophase. Th leol it to the f ti f the spireme 
Fic. 3. Metaphase. The chromosomes are intact and show no sign of Mahite 
Fic. 4. Telophase. Chromatic granules (prochondriomes) are left on the 
ate. 
IG. 5. Late telophase. The prochondriomes still persist during the organi- 
zation of the chromosomes into prenuclear masses. (The total number of pro- 
chondriomes in the section is shown.) 
1Gs. 6, 7. Late telophase. The prochondriomes migrate into the cytoplasm 
as the new trait is formed. 
