Origin of Fungus-germs and Monads. 217 



Fiy. 1. C. Portions of a large Zoogloca mass at a later stage in which the 

 coutained bacteria are still distinct, though altered, within 

 the segments. 

 D. Glistening segments of a Zooglcea mass in which the bacteria 

 are completely objciired, while by their side are other 

 segments which have become resolved into brown Fungus- 

 germs. 



A, B, and D, x 500 ; C, X 700. 



Fi(/. 2. A. Segments of a large Zooglcea mass becoming brown, in some 

 of Avhich the constituent bacteria may be seen. 



B. A Zooglcea aggregate in an early stage becoming brown. 



C. A similar ma^ss from the same scum segmenting into pale 



brown Fungus-germs. 

 B. Zooglcea mass as a whole becoming brown. 



E. Two small Zooglcea masses which have become of a darker 



brown colour. 



F. Still smaller Zooglrea units which have become brown, and, 



like the last, also show the contained bacteria. 

 All X 500. 



Fi[/.3. A. Portion of a Zooglcea mass which is beginning to be trans- 

 formed into an aggregate of embryo Fungus-germs. 



B. A later stage of the same change, in which the embryo germs 



are more distinct. 



C. A later stage still, in which the germs are larger and becoming 



brown. 



D. Masses of Zooglcea which have been completely transformed 



into asrgregates of brown Fungus-germs. 

 A, B, and C, X 700 ; D, x 500. 



Fit/. 4. A. Zooglcea masses of a pale brown colour being transformed into 

 very distinct Fungus-germs. 

 B. A Zooglcea mass converted into brown, roundish segments 

 which are being ti'ansformed into Fungus-germs. 

 A, X 700 ; B, X 500. 



Plate XV. 



Fiff. 5. A. A pellucid ramifying mass of Zooglcea. 



B. Commencement of segmentation in portions of such a pellucid 

 mass. 



Each X 500. 



Fi(/. G. A. Early stage in the formation of Monads from a similar pellucid 

 mass of Zooglcea. 

 B. More complete segmentation of such a Zooglcea mass into 

 embryo Monads. 



Each X 50a 



Fiff. 7. A, Portion of a hay pellicle showing discrete motionless cor- 

 puscles scattered through it. 

 B. A few of these discrete corpuscles more highly magnitied and 

 showing contained bacteria but no nucleus. 

 A, X 500; B, x 700. 



