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limestones are found in the north of Jabbalpur and in the 

 Vindhyan range. The Makrana marble quarries of Raj- 

 putana are very famous, 



920. The production of marble in the Sonthal Parganas 

 is about 7,000 tons per annum ; in Mohghyr, about 28,000 

 tons; in Mozufferpore, about 13,000 tons. Cuttack, Balasore 

 and Manbhum also produce some. Singhbhum, Lohardaga 

 and a few other western districts also contain limestone rocks. 

 In Mozufferpore there are some kankar quarries also, the 

 annual outturn of which is about 13,000 tons. In Monghyr 

 the annual outturn of kankar is estimated at 28,000 tons and 

 in Manbhum at 40,000 tons. Kankar lime is also produced 

 largely in Cuttack, Balasore, Birbhum, Burdwan, Midnapur 

 and Murshidabad. 



92.1. t Lime as a mere plant-food is not of much conse- 

 qiienee, as every soil contains far more lime than can be 

 used up by thousands of crops. As plant-food, shells and 

 limestones rich in animal remains and containing Ca 3 P 2 O 8 

 and N, are better manures to use: In the district of Pertap- 

 garh in Oudh, the cultivators use an ochry argillaceous 

 kankar as manure. As plant-food this is a better substance 

 to use than pure lime. , \ 



922. If a soil to the depth of i ft. weighs 3, 250*000, Ibs. 

 per acre and if it contains only> - r i;:per cent, of lime, it will have 

 as 'much as 3,250 tbst of this constituent. But a crop of;i2Qolhs. 

 of wheat and 2,000 'Ibs* of straw contains only 6 or 7 Ibs.' of 

 lime, and of 600 Ibs. of peas and 1200 Ibs. of pea straw only 28 

 and 29 Ibs. respectively. The farmyard manure returned to the 

 soil, if properly rotten may contain as much as 2 per. cent, of 

 lime, i.e.ii only one ton of rotten manure is applied per acrejt 

 would add 46 Ibs. of lime to the soil* which is more than isnffi- 

 cient for the requirements of one single crop, IQO f lbs. of 

 bone-meal contains about 27 Ibs. of lime, and 100 Ibs. of crude 

 gypsum refuse of soda water factories, as much as 30 IJbfs., 

 quantities sufficient for supplying lime to almost any crop., i 



