giveii to such work without almost entirely stopping the progress of 

 the geological investigation. 



Such details must he reserved for such time as the large scale map 

 of the province prepared by the regular survey establishment be avail- 

 able. With the aid of this, and with the knowledge already acquired 

 as to the distribution of fossils from the very extensive collections made 

 by Mr. Wynne and Mr. Fedden during their examination of Kutch, it 

 will be possible to map out in ample detail the various groups of the 

 Jurassic rocks represented in the province. 



Towards this result great progress has already been made. The 

 whole of the important group of fossils, the Ammonitida, has been care- 

 fully examined by Dr. W. Waagen, and a brief abstract of his results 

 given in the Records of the Geological Survey of India (1871, p. 89). 

 And more recently Dr. Stoliczka has examined the beds in situ, and fuUy 

 satisfied himself that it will be easy to map out several of the groups 

 and zones with as much accuracy as in parts of Europe. The full details 

 will be given in a future part of these Memoirs. 



I regret that some terms were allowed to creep into the report 

 without notice until it was too late to alter them, which without ex- 

 planation may possibly lead to erroneous conceptions. The terms upper 

 and lower Jurassic groups were intended to be of piu-ely local application, 

 and to apply solely to physical position ; they have no reference what- 

 ever to the divisions of the great Jurassic series, known as ' upper' and 

 ' lower' Jurassic in Europe and elsewhere, and it is requested that in 

 reading the following pages they may be understood solely as intended 

 to convey the idea of the existence of two great groups of beds belong- 

 ing to the same general series, one of which was physically over 

 the other. 



No systematic attempt has been made to reduce the orthography 

 of the names of places to any fixed system. We could not get the aid 



