Feet of Insects, Petals of Geranium, etc. 



Plate 6. 



1. Foot of Spider, magnified 18 diameters. 2. Claws of Spider, magd. 100 diams. 



3. Foot of Fly, magd. 20 diams. 4. Foot of Boatfly, magd. 4 diams. 



5. lioatfly. 6. Boatfly floating. 7. Boatfly on the wing. 8. Petal of Geranium. 



9. Piece of Geranium Petal, magd. 8 diams. 10. Minute portion of Petal, magd. 150 diams. 



11. Pollen of Clarkia. pulchella, mag. 100 diameters. 12. Pollen of Crown-imperial, im:g. 100 diams. 



13. Grain of the above, magd. 300 diams. 14. Pollen of Salvia patens, magd. 100 diams. 



