THAMES WATER. 751 



to sexual maturity. One species of filaria penetrates 



1. Klarian worm ; 2. Chcetogastcr lijmnceus : 2a. Enlarged head of same : 

 3. Anguillula fluviatilis ; 4. Thames mud-worm ; 5. Hydra fusca; 6. 

 Paramoacium (e'ngraver has made it too irregular in outline : it is nearly 

 ovoid) ; 7. Egg of culex ; 8. Pupa of Chironomus viridulus : 0. Bacteria ; 

 10. Spirilla ; 11. Starch and epithelium scales. The various objects magni- 

 fied from 5 to 350 diameters. 



the bronchial tubes of sheep, producing a debilitating 



