■418 Original Articles. [July? 



of the Zoophytes out of technical phraseology and Greek compounds 

 into as plain English as the subject will permit, and with such comment 

 as our own studies might supply — pro bono publico. 



EXPLANATION OF THE PLATES. 



Plate I. 



Fig. 1. A polypite of Clava. x, x, Clusters of reproductive buds. 



Fig. la. The female generative Sac of Clava, highly magnified. 



Fig. 2. The free Gono-zooid of Coryne eximia. 



Fig. 3. Podocoryne cornea, Sars. 



Fig. 4. Reproductive Sacs of Tubularia indivisa. 



Fig. 5. Hydractinia echinata, Fleming, — fertile polypites. 



Fig. 6. Clavatella prolifera, Hincks. 



PLATE II. 



Fig. 7. The ambulatory Gono-zooid of Clavatella. f, the ovary. 



Fig. 8. Gonoitiyraza Love'ni, Allman. 



Fig. 9. The reproductive Capsule ( Gono-theca) of Laomedea amphora, Agassiz. 



From the figure in the " Contributions to the Nat. Hist, of the U.S." 



Vol. iv. plate xxx. 

 Fig. 10. The fixed Gono-zooid of Rhizogeton fusiformis, Agassiz. 

 Figs. 11-14. Gono-zooid of Podocoryne camea. 



ON THE NEW EED SANDSTONE AS A SOTTKCE OF WATER 

 SUPPLY FOE THE CENTRAL TOWNS OF ENGLAND. 



By Edward Hull, B.A., F.G.S. Of the Geological Survey. 



Those who are anywise acquainted with the internal economy of 

 towns and cities in our small and densely-peopled Isle, are aware of 

 the increasing importance of a permanent supply of good water. 

 Session after session, corporations, companies, and commissioners 

 come before Parliament for powers to carry out schemes of water- 

 supply, not only for places already inhabited, but for those whose 

 destiny as such, at no distant day, is clearly foreshadowed by the 

 growth of the neighbouring town. Railways often cause the Fates 

 to spin the wheel with unusual celerity — and the supply beforehand 

 of abundance of pure water is an additional motive power — hence in a 

 few years a houseless suburb becomes in itself a flourishing town. 



In former times, even without going so far back as the days of 

 Goldsmith, when there were such things as villages in the central 

 parts of England, every large house had its well, and a mighty pump 

 placed in the centre of the village supplied the wants of the poor. 

 In other cases a gurgling brook ran by the houses, singing merrily — 



" Men may come, and men may go, 

 But I go on for ever ;" 



and freely giving-of its waters for household use ; but now that the vil- 

 lages have grown (or are growing) into towns, and towns into cities, 

 whose inhabitants are coiinted by hundreds of thousands, — these ordi- 

 nary sources of supply are becoming obsolete and useless from contamin- 



