Synopsis A work that is already well-known needs no word of commendation. It has made its way in the outlying districts of the Punjab, and every Sadhu who knows to read and write receives instruction form his Guru, in this very work, so that by perusing it, he learns all that is worth knowing of the Upanishads. It embodies a mass of instruction which cannot be otherwise had, unless a large umber of original works difficult to understand, and requiring the lifetime of an individual are gone through. It is the only work of its kind in the vernacular. To increase its utility and to make it easily understood without any extraordinary pains, or the assistance of Pundits, its present garb will be unusually facilitating to those who understand the language in which it is written. Where the text is obscure or requires elucidation by reference to other subjects beyond the pale of the work in hand, ample notes and references have been given to avoid the necessity of consulting the original works. No pains have been spared to increase its utility and give a true and correct rendering of the text, so that it can be confidently recommended. The original work abounds in the technicalities of the original Sanskrit from which our author has drawn largely and their rendering into English has always been given in the planest terms, so that there may be no mistake.