1839.] On Wells used in Foundations in Upper India. 339 



might be mistaken for the stone lime of the Northern Division. In 

 the locks and works on the Doab Canal, appended to them at Shuk- 

 ulpoor, Sikrani, and Jaoli, in the southern district opposite Delhi, 

 nothing but Hursoroo in the following proportions has been used in 

 the superstructure, 



1 part of Hursoroo,* 



1^ ditto of Bujree, 

 and in the neighbourhood of Delhi the use of pounded brick, or soor- 

 khee, has been almost entirely superseded by that of Bujree.t 



The sand stone, which is an attendant upon the great Quartzoze 

 formation of the ridge upon which Tughlukabad, the Kotub Miliar, 

 and old and new Delhi stand, varies from compact and crystalline, to 

 a loose and friable rock ; in this latter case it consists of an agglutina- 

 tion of minute angular fragments of quartz, with, in some cases, a 

 red oxyde of iron in such abundance as to give the strata quite a pe- 

 culiar character; in other cases the oxyde is wanting, and this friable 

 rock is of a light color. For roads and other purposes these varieties 

 of the sand stone are much in request, and amongst the natives obtain 

 the name of Bujree. Nothing could be a better substitute for soor- 

 khee, than the substance in question. The presence of the iron oxyde 

 is in every way favorable to its value in hydraulic works, and the 

 sharpness of the particle of which it is composed renders it an admi- 

 rable mixture with lime for plaister or stucco. In this form it stands 

 the effect of the climate much better than soorkhee or river sand. 

 In the proportion of one part of Hursoroo lime to one part of 

 bujree, mortar laid on with a float, as is used in sand, may be 

 considered very far superior to it, and with a much better appearance 

 than that practised by the natives, under the tedious process of beat- 

 ing with the thappa. This bujree is now universally used on the 

 Doab Canal works, at all points at which it can be delivered under 

 eight rupees per 100 maunds, this being the maximum rate of 



* The following is the detail of proportions used in the cement at these works, and 

 as they were built in 1834-35, a sufficient time has elapsed to judge of the durability 

 of the masonry, no repair of any description having taken place up" to this period. 



™ i ,. -it C Hursoroo Lime, 1 part. 



foundations including > ^ ,, T . ' o 



tm o ° < harth Lime, ^ »> 



Moorings, &c Jn • ,™ 2 



& ' ^Joajree,. L >> 



G , , C Hursoroo Lime, 1 >> 



Superstructure, J Bujree, , 4 » 



■d, • , ( Hursoroo Lime, 1 >> 



Plaistev > iBujree, 1 » 



Sundulla or outer thin') a ^„ a T ;™* 8 



coating given to the C|^L^e, .. ;; ... ; ;; « 



plaister, as a finish.) fe001kliee ' 



f This has I believe been the case in the Delhi works for many years. 



Yy 



