SEA-WATER AQUARIA. 127 



Fig. 5. — Fountain in aquarium tank. 



6. — Glass vessel (or Aspirator) : acts as fountain reservoir. 

 7. — Iron and brass stand of fountain reservoir. 

 8. — Glass tap of fountain reservoir. 



9. — India-rubber tube, leading from fountain reservoir to 

 fountain jet. 

 10. — Glass fountain-jet ; dotted line shows the position in 



aquarium tank. 

 11. — Overflow glass pipe and india-rubber tube from aquarium 



tank leading into large earthenware reservoir. 

 12. — Driving-wheel of rotary pump. 

 13. — Rotary pump. 

 14. — Wooden board on which rotary pump and driving-wheel are 



fixed. 

 15. — 1-inch delivery hose from pump into fountain reservoir. 

 16. — 1-inch suction hose arranged as syphon from large earthen- 

 ware reserv^oir to pump. 

 17. — Large earthenware reservoir (or Mixing Pan). 

 18.— Wall. 



Plate VI. — Plan of small Rotary Pump supplied by Messrs. Leete, 

 Edwards, & Norman, Limited ; showing front and side views. 

 Fig. ]. — Strong wooden board. 

 „ 2.— Wall. 

 ,, 3. — Driving wheel. 



4. — Handle of driving wheel. 

 5. — Rotary pump. 

 ,, 6. — India-rubber driving cord. 

 ,, 7. — 1-inch suction hose. 

 ,, 8. — Lower opening of pump. 

 ,, 9. — Upper opening of pump. 

 ,, 10. — 1-inch delivery hose. 





Photography has thrown a curious light upon plant life. 

 Photographs of a seedling have been taken every half-hour, with 

 the result that sufficient change has taken place in the growth to 

 be noted on the sensitive plate. A series of these photographs, 

 placed in the zoetrope, give the impression of a stem growing 

 under our very eyes. The statement is made that photography 

 has demonstrated that even when asleep the plants were con- 

 tinually growing. 



