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DESCRIPTION OF PLATES 
Plate XXVI 
Fig. I. Pinus Strohus L. "Resting" nucleus from fusiform initial, showing char- 
acteristic shape during spring-summer. Tangential, longitudinal extension. X 850. 
Fig. 2. Same. Nucleus from longitudinally dividing, fusiform initial, seen in radial, 
longitudinal extension. Early prophase. X 850. 
Fig. 3. Same. Later prophase. X 850. 
Fig. 4. Same. Oblique position of karyokinetic figure, metaphase. X 850. 
Fig. 5. Same. Early anaphase. X 850. 
Fig. 6. Same. Karyokinetic figure from transversely dividing, fusiform initial, seen 
in tangential, longitudinal extension. Spirem formed by short, wide type of resting 
nucleus. X 850. 
Fig. 7. Same. Metaphase from transversely dividing, fusiform initial, seen in 
tangential, longitudinal extension. X 850. 
Fig. 8. Same. Metaphase from wide, obliquely dividing, fusiform initial, seen in 
tangential, longitudinal extension. X 850. 
Fig. 9. Same. Late anaphase from narrow, transversely dividing, fusiform initial, 
seen in tangential, longitudinal extension. X 850. 
Fig. 10. Same. "Resting" nucleus from fusiform initial, showing characteristic 
elongated, fall-winter shape. Tangential, longitudinal extension. Compare figure i. 
X 850. 
Fig. II. Same. Elongated type of spirem formed by elongated nucleus. Compare 
figure 6. X 850. 
Fig. 12. Same. Metaphase from obliquely dividing fusiform initial, seen in tangen- 
tial, longitudinal extension. X 850. 
