112 F. E. Pargiter —Ancient Countries in Eastern India. [No. 2, 
dually disappeared so completely that no trace of their name, which 
is a singular one, seems to be discoverable. If, however, Kalidasa is 
right in the passage quoted in page 105, it indicates how Prag-jyotisa 
was dwindling away in his time. Pressed by the Pundras on the west, 
by the Vaqgas on the south, by the new Kama-rupason the north-east, 
and probably by fresh Mongolian tribes on the north, the Prag-jyotisas 
were forced to retreat to the east side of the Brahma-putra, into the 
Garo and Khasi hills and into the district of Sylhet; and it is probably 
in that direction that the kingdom must have perished. 
v Lastly came the invasion of the Aryas into Eastern India. Their 
conquering vigour seems to have spent itself by the time they sub¬ 
dued Videha and Magadha, for they had already passed through many 
generations in the plains of North India, and the enervating climate 
and easy conditions of life had surely, if slowly, modified the constitu¬ 
tion which their ancestors had acquired in colder and hardier climes. 
