Fig. 1 . Details of the garden pea flower: longitudinal section of the flower 
showing the four whorls: the two outer whorls removed, showing the ten 
stamens and the brush-tipped pistil. (After Warming.) 
Fig. 2. Pollen grains from various common plants, many times enlarged. 
The plants represented are: Mimulus, Pink, Morning-glory. Salvia , Coboea , 
Passion-flower. Pine. Movina , Pumpkin, Hemp, Alba cca and Corydalis. 
(After Kerner and Oliver.) 
Fig. 3. Immature fruits and seed capsules of the Potato, Mignonette and 
Violet, with cross sections of the same showing their im mature seeds. Also 
longitudinal section of a young rose hip, showing the structures that later be- 
come seeds. At the extreme right is a longitudinal section of a single pistil of 
of the rose, showing the seed forming organ at the base. All figures magnified. 
(After Kerner and Oliver.) 
