60 



Crystalline Limestone [no. 5, new series, 



proceeding in any direction out towards the valley; at nights aline 

 of fires are lighted for this purpose. On the day of the drive peo- 

 ple are stationed at intervals outside the palisadings and abattis, 

 to drive back the Elephants if they attempt to break through. Two 

 small bon-fires are made on each side of the entrance, within the 

 Coopum concealed by bushes, and the moment the Elephants enter 

 two men are ready to rush in and light them ; faggots which have 

 been previously collected and piled near the entrance, are quickly 

 thrown on and soon two immense fires are formed which effectual- 

 ly prevent the Elephants attemping to recross the causeway, while 

 a number of coolies detailed for the purpose are demolishing it. 



Muskets, rockets, crackers, tom-toms and horns are used in the 

 drive, which combined with the shouting of several hundred men 

 is enough to intimidate the boldest Elephant from charging back, 

 tut it is difficult to get Natives to believe this. Every thing de- 

 pends on their having good leaders. 



Besides those employed in guarding the enclosures, and driving 

 a number of men are placed on the flanks beyond the arms or en- 

 closures of the Coopum, as soon as the drive commences they light 

 small fires, the Elephants have such a dread of fire, that if well- 

 driven, on seeing the fires on each side of them, they are sure to 

 make straight for the enclosure. 



III. Notice of the occurrence of Crystalline Limestone in 

 the District of Coimbatore. By H. F. Blanford, Esq. 

 of the Geological Survey of India. 



During the progress of the Geological Survey of the Neilgherry 

 Hills in the months of June to November of the current year, my at- 

 tention was called to some specimens of Crystalline Limestone col- 

 lected by Dr. Cleghorn and Capt. Francis, Engineers. This discovery 

 of limestone, which is of the greatest interest both in an economical 

 and scientic point of view, induced me to avail myself of an early 

 opportunity to visit the locality in question, in order to ascertain 

 the nature and extent of the mass of limestone, from which the 



