XXXV111. ABSTRACT OF PROCEEDINGS — APPENDIX. 



structed on both branches of the river below the barrage 

 which hold up 3J metres, or the total head held np was 6J 

 metres. In this way more perfect control has been obtained 

 over the water at the apex of the delta during all seasons* 

 The Menufia regulator, at the head of the Central Canal,, 

 is a fine specimen of its kind. 



The Zifta Barrage, built across the Damietta branch, is 

 a typical example of a river regulator, and embodies the 

 experience gained in the construction of similar works 

 elsewhere. 



The United Provinces of Agra and the Oudh, the Madras 

 Presidency, and also the Punjab in India furnish some 

 manificent examples of irrigation works. 



In the former the Ganges upper and lower systems of 

 perennial canals are the most important. The Upper 

 Ganges Canal takes off just above the sacred town of 

 Hardwar, where the river emerges from the Sewalic Hills 

 at the foot of the Himalayan Mountains. The Lower 

 Ganges takes off at Narora where a fine weir has been 

 constructed. 



On both systems of canals there are many very interest- 

 ing works, such as the Ranipur and Puthri super passages 

 for passing mountain torrents across the canal, the Solani 

 Aqueduct carrying the canal across the Solani Valley, the 

 Dhanauri level crossing. All these are on the Upper 

 Ganges system. On the Lower Ganges Canal there is a 

 remarkably fine aqueduct called the Kali Nadi, or Nadrai. 



The most modern and one of the finest of the great 

 perennial systems is the Chenab Canal which irrigates the 

 country known as the Rechua Doab between the Ravi and 

 the Chenab rivers. A weir has been constructed across 

 the Chenab at Khanke 4,000 feet long, with very fine under- 

 sluices which keep the channel clear in front of the head 

 works of the canal. The canal has a full discharge of 



