An earlier date, to bring Kālidāsa under the Guptas, has been favoured by other authorities, who have found that the reference to a conquest of the Hūṇas must be held to be allusion to a contemporary event. This date is attained on second thoughts by Professor Pathak, [302] who places the Hūṇas on the Oxus on this view, and holds that Kālidāsa wrote his poem shortly after A.D. 450, the date of the first establishment of their empire in the Oxus valley, but before their first defeat by Skandagupta, which took place before A.D. 455, when they were still in the Oxus valley and were considered the most invincible warriors of the age. On the other hand, Monmohan Chakravarti, [303] who converted Professor Pathak to belief in the contemporaneity of Kālidāsa with the Guptas, places the date at between A.D. 480 and 490, on the theory that the Hūṇas were in Kālidāsa’s time in Kashmir. The whole argument, however, appears fallacious; Raghu is represented as conquering the Persians, and there is no contemporary ground for this allegation; manifestly we have no serious historical reminiscences, but, as is natural in a Brahmanical poet, a reference of the type of the epic which knows perfectly well the Hūṇas. The exact identity of the Hūṇas of the epic is immaterial; as the name had penetrated to the western world by the second century A.D. if not earlier, there is no conceivable reason for assuming that it could not have reached India long before the fifth or sixth centuries A.D. [304] Other evidence is scanty. Mallinātha, as is notorious, finds in verse 14 of the Meghadūta a reference to a poet Nicula, a friend of Kālidāsa, and an enemy Dignāga; the latter would be the famous Buddhist logician, and, assuming that his date is the fifth century A.D., we have an argument for placing Kālidāsa in the fifth or sixth century A.D. But the difficulties of this argument are insurmountable. In the first place, it is extremely difficult to accept the alleged reference to Nicula, who is otherwise a mere name, and to Dignāga; why a Buddhist logician should have attacked a poet does not appear, especially as every other record of the conflict is lost. Nor is the double entendre at all in Kālidāsa’s manner; [305] such efforts are little in harmony with Kālidāsa’s age, while later they are precisely what is admitted, and are naturally seen by the commentators where not really intended. It is significant that the allusion is not noted by Vallabhadeva, and that it first occurs in Dakṣināvarta Nātha (c. A.D. 1200) and Mallinātha (fourteenth century), many centuries after the latest date assignable to Kālidāsa. Even, however, if the reference were real, the date of Dignāga can no longer be placed confidently in the fifth century A.D., or with other authorities in the sixth century. On the contrary, there is a good deal of evidence which suggests that A.D. 400 is as late as he can properly be placed. [306]