12 
DIKNER : TRIAS OF THE TIIMAT.AYAS. 
110 strict evidence for tlie liomotaxy with the Buntsandstein of tlie 
beds underlying the Niti limestone." 
The annexed table clearly shows the progress which has been 
made in the classification of the Himilayan Trias since 1865. 
The stratigraphy of the Trias in the Central Himalayas is fixed with 
sufficient certainty now to exclude the probability of any considerable 
alterations in the sequence of horizons. It is necessary to lay special 
stress on the fact that, even where differences of opinion still exist 
between two authors — as for instance in the case of the question of the 
Permo-Triassic boundary — those authors agree in their views concerning 
the local stratigraphy, as estabhshed in the classical sections of Spiti 
and Painkhanda. It is in the interpretation of the facts observed that 
they differ, not in the facts themselves. 
