Feet of Insects, Petal of Geranium, etc. 



Plate 3. 



1. Foot of Spider, magnified 18 diameters. 2. Claws of Spider, magd. K'-O cliams. 



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



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



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



'ollen of clarkia pulchella, mag. 100 diameters. 12. Pollen of Crown-imperial, mug. 100 diams. 



13. Grain of the above, magd. 300 diams. 14. Pollen of Salvia paten?, magd. ICO diams. 



