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POPULAR SCIENCE REYIEW. 
EXPLANATION OF PLATES. 
Fig. 1. S. officinalis, var. grandifloras (.?) (natural size). 
Fig. 2. Flower in section. Magnified. 
Fig. 3. Front view of stamens. Much magnified, a. filament, h. lower 
barren anther cell. c. upper polliniferous anther cell. d. con- 
nective ; united by a joint to the filament at e. 
Fig. 4. Stamens seen laterally, and at rest. Magnified. 
Fig. 5. Stamens seen laterally when in rotation. Magnified. 
Fig. 6. Front view of fiower. Magnified. 
Fig. 7. Bee visiting nectary and rotating the anthers. 
Fig. 8. Flower some time after expansion. Pistil mature. Magnified. 
Fig. 9. S. Sclarea. Natural size. 
Fig. 10. S. Sclarea in section. Much magnified. 
Fig. 11. Boat-shaped receptacle formed by union of lower anther cells in 
S. Sclarea. Much magnified. 
Fig. 12. S. Patens in section. Natural size. Anthers at rest. Usua 
form. 
Fig. 13. S. Patens, lateral view. Anthers rotated as would be the case 
were an insect to visit nectary. Usual form. • 
Fig. 14. S. Patens, occasional form in section. Anthers at rest. 
Fig. 15. S. Patens, occasional form, lateral view. Anthers rotated. 
