( 107 ) 
Journal of the Asiatic Society, 1863. Mr. Salter's quotations 
of my paper are taken from a copy of the original manuscript 
which I had with me in England, and there are one or two 
points in these quotations which I have felt it better not 
to alter in the reprint, but which require explanation, as 
they are at variance with the views enunciated in my paper 
as published. 
The chief of these is the reference to the Liassic species 
A. communis , A. heterophyllus, A. Thouarsensis, A. hifrons, A. 
concavus and Pectcn cequivalvis, which will be found enumerated 
in the list of Himalyan fossils at page 102, and five of which 
were figured by Mr. Prinsep as forming part of Dr. Gerard's 
collection (As. Res. Vol. XVIII). This latter authority I had 
unhesitatingly accepted as evidence that the species in question 
formed part of Dr. Gerard's Spiti collection, nor had I any 
reason to suspect otherwise, until Mr. Theobald, on returning 
from a visit to Spiti, informed me that he had obtained no 
fossils similar to them, and pointed out that none of the 
undoubtedly genuine fossils had a similar matrix. I have 
already (Journ. As. Soc., Vol. XXXII., p. 124) published my 
reasons for the conclusion at which I eventually arrived, viz., 
that the species in question were really Whitby fossils that 
had been accidentally mixed up with Dr. Gerard's collection, 
a conclusion which has been disputed by Mr. Oldham (Journ. 
As. Soc., Vol. XXXIII, p. 237), but which, on careful re-consi¬ 
deration, I see no reason to alter. Dr. Stoliczka's examination 
of the Spiti Valley and its neighbourhood has been made 
subsequently to the reading of Mr. Oldham's paper, and he 
was well aware of the question at issue. lie has examined 
the country more thoroughly than any of his predecessors, 
as his published report will doubtless show, and he was espe¬ 
cially careful to re-visit and examine all the localities men¬ 
tioned by Dr. Gerard; but, although he has obtained fossils 
which appear to be of Liassic age, he has not found any of 
the species above enumerated, nor have his Liassic fossils 
the characteristic ‘ Whitby' matrix. 
On the other hand, Dr. Oppel describes and gives a figure 
of an Ammonite from Gnari Khorsum, in M. Schlagintweit's 
