The Diseases of Language 411 the present stem and past stem respectively Thus the present tense of the verb khandan (to buy) is: mikharam mikharim rmkhan mikkand mikharad mkharand The corresponding past tenses are: khandam, kharidi, etc (I bought, you bought, etc,)> and mtkhandam^ mikhandi> etc (I was buying, you were buying, etc ). For perfected action, future time, and the passive voice, constructions involving helper verbs do service: budan for the first, khastan (to wish) for the second, and shodan (to become) for the third. Though the modern Indie languages of Aryan origin have not covered the same distance as Persian, they have travelled in the same direction. Sir George Gnerson, who was in charge of the Linguistic Survey of Indza, writes of the Hindi dialects. Some of these dialects are as analytical as English, others are as syn- thetic as German Some have the simplest grammar, with every word- relationship indicated, not by declension or conjugation, but by the use of help-words, while others have grammars more complicated than that of Latin, with verbs that change their forms not only in agreement with the subject, but even with the object According to the prevalence of isolating and flexional features, we can divide modern Indo-Aryan vernaculars (17 standard languages with 345 dialects, spoken by some 230 millions) into two classes, one covering the centre of the North Indian plain, called Midland, the other, called the Outer, surrounding it in three-quarters of a circle The former is represented by Western Hindis Panjabt, Rajasiham, and Gujarati^ the latter by vernaculars such as Ldhnda^ Sindhi; Maratkt3 Bihan, Bengali. Gnerson says. "The languages of the Outer sub-branch have gone a stage further in linguistic evolution They were once, in their Sanskrit form, synthetic; then they passed through an analytical stage—some are passing out of that stage only now, and are, like Smdhi and Kashmiri, so to speak caught in the act—and have again become synthetic by the incorporation of the auxiliary words, used in the analytical stage, with the main words to which they are attached, . . . The grammar of each of the Inner lan- guages can be written on a few leaves, while, in order to acquire an acquaintance with one of the Outer languages, page after page of more or less complicated declensions and conjugations must be mastered." Bengali is spoken in the delta of the Ganges, and north and east to