ITS DIFFERENT PHASES OF DEVELOPMENT IN THE ANIMAL SERIES. 
87 
Fig. 15 a. Coloured nucleated cell from human blood. 
Fig. 15 b. Nucleated cell, in transition from uncoloured to coloured stage, from the 
blood of the Horse. 
Fig. 16. Nucleated cell, in transition from uncoloured to coloured stage, from the 
blood of the Sheep. 
Fig. 17- Nucleated cell, in transition from uncoloured to coloured stage, from the 
blood of the Paco. 
Third, Phase. — Free Cellaeform Nucleus. 
Fig. 18. Free cellaeform nucleus, coloured stage, of human blood. 
Fig. 19. Free cellaeform nucleus, uncoloured stage, of the blood of the Horse. 
Fig. 20. Free cellaeform nucleus, coloured stage, of the blood of the Horse. 
Fig. 21. Free cellaeform nucleus, in transition from uncoloured to coloured stage, of 
the blood of the Horse. 
Fig. 22. Free cellaeform nucleus, coloured stage, of the blood of the Sheep. 
Fig. 23. Free cellaeform nucleus, coloured stage, of the blood of the Elephant. 
Figs. 24 and 25. Free cellaeform nuclei, coloured stage, of the blood of the Goat. 
Fig. 26. Free cellaeform nucleus, uncoloured and circular stage, of the blood of the 
Paco. 
Fig. 27. Free cellaeform nucleus, coloured and oval stage, of the blood of the Paco. 
Figs. 28, 29, 30. Free cellaeform nuclei, in transition from uncoloured and circular 
stage to coloured and oval stage, of the blood of the Paco. 
Fig. 31. Free cellaeform nucleus, coloured stage, of the blood of the Paco rendered 
circular by the action of water. 
MDCCCXLVI. 
N 
