Feet of Insects, Petal of Geranium, etc. 



Plate 3. 



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. Boatfly. 6, Boatfly floating 7- Boatfly on the wing. 8. Petral of Geranium. 

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

 Pollen of Olarkia pulchella, magd. 100 diameters. 12. Pollen of Crown-imperial, magd. 100 diams. 

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



