188 Proceedings of the Asiatic Society. [July, 



equally interesting, and so is also the animal of Mr. W. T. Blanford's 

 Crcmnoconclms Syhadrcnsis ; but all these possess gills, though they 

 gradually become rudimentary and ultimately no doubt will disappear. 

 Changes in other organs are similar to those just mentioned, they 

 progress very gradually. The morphological studies on these subjects 

 will be in every respect very interesting and important for the zoologist 

 and in particular for the conchologist. 



VI. — Extracts from letters addressed to Ba'bu Ra'jendrala'la Mitra 

 by Professor C. Holmboe, of Ghristiania, giving abstracts of 

 certain papers lately published by him ; by Ba'bu Ra'jendrala'la 

 Mitra. 



Adverting to his paper on the relation which formerly existed be- 

 tween the ancient weights of Southern India and Scandinavia, Professor 

 Holmboe says, " While looking for corresponding terms for the weights 

 of Southern India and Scandinavia, I have discovered that in the 

 middle ages, there was current in Russia a grivna which was repro- 

 duced in the marc of Scandinavia and the ser of India. The grivna 

 subsequently passed into the grivenha, that is to say, the ' small 

 grivna,' when the Russians adopted a Ho of two grivenha. There have 

 been found in Russia a great number of bars of silver, the weight of 

 which is equal to the marc of the ancient Scandinavians, and as 

 among them rings of the same metal represent a demi-marc, so in 

 Russia they divided the grivenha into two, and called them half- 

 roubles— a name which was gradually used to designate the Russian 

 dollar of a smaller weight. 



" In another Memoir I have demonstrated that the resemblance 

 of the sepulchral mounds of Norway with the topes of Asia, concerns 

 principally the series of rocks which surrounds the base of the 

 monuments which formerly contained images of the Linga of the 

 Indians. There are preserved in our museums some specimens of the 

 Linga, found under ground, and made of white marble or of a whitish 

 calcareous stone. I have spoken of these in my memoir on the traces 

 of Sivaism in Europe, and given drawings of them." 



In a Memoir on the figure of a boar on Gallic and Indian coins, 

 the author notices the similitude between certain accessories which 

 accompany them. On the Gallic coins, the boar is placed at the end 



