POSTSCRIPT BY II. E. BLANFORD. 
In the interval that has elapsed since the original text of 
the foregoing pages was prepared, upwards of two years, much 
has been added to our knowledge of the Palaeontology of the 
Northern Himalya; Professor Oppel of Munich has published a 
considerable portion of the fossils collected by the Messrs- 
Schlagintweit, and still more recently, Dr. Ferdinand Stoliezka 
has visited the Spiti Valley, and has made a far more thorough 
investigation of the fossiliferous formations of that part of the 
Himalya than had been accomplished by any previous 
visitor. I will not attempt here, by any imperfect account of 
what he has communicated to me, to anticipate the highly 
interesting additions which Dr. Stoliezka has made to our 
knowledge. Being an experienced Palaeontologist, he has 
brought his knowledge of fossil forms to bear on the study of 
the Spiti formations in situ, and the result has been that he 
has defined their stratigraphic and palaeontological relations 
with a completeness far surpassing anything previously 
effected. Dr. Stoliezka is now engaged in working out the 
fossils collected by himself, as well as those previously obtained 
by Mr. Theobald, and I do not doubt that his more extensive 
material and trained judgment will enable him to correct my 
own work on the Jurassic fossils of the Himalya on several 
points. These, however, I shall leave to him to point out in 
his forthcoming work, and shall content myself in this 
postscript with making such corrections as are necessitated 
by the prior appearance of Professor OppeFs work on the 
Jurassic ammonites, a copy of which that gentleman has 
most kindly furnished to me. Professor OppeFs nomencla¬ 
ture will of course take precedence of that of the foregoing 
pages. It is, however, of later publication (1861) than that 
in text of my paper in the Journal of the Asiatic Society 
(1868). 
