

DESCRIPTION OF PLATES, 



In the examination of these Plates the observer is 

 requested to remember that they are not all drawn 

 to the same scale. Some objects, adapted for low 

 powers, are only magnified a few times, whilst smaller 

 objects are magnified many hundred times. All objects, 

 of course, vary in apparent size, according to the powers 

 with which they are examined. Descriptions of the 

 objects will be found in the pages indicated. 



PLATE I. 



FIG. PAGE. 



1. Vegetable cells with nucleus from apple 17 



2. Cellular tissue from pith of elder 17 



5. Stellate cell-tissue from rush 18 



4. Flat tabular cell from surface of tongue 70 



5. Ciliated cell from windpipe of calf .*.... 71 



6. Human blood corpuscles 71 



7. Blood corpuscles from fowl 71 



8. Blood ^corpuscle from frog 71 



9. Blood corpuscle from sole 71 



10. Blood corpuscle from beetle 71 



11. Filament of a species of Zygnema, a plant 42 



12. Filament of a species of Oscillatoria, a plant 42 



13. Pandorina, Morum, a plant 27-43 



14. Volvox Globatw, a plant 27-43 



54! ?ft 



