“Schott explains that by Sian or Shin-Sian are understood in the old Chinese conception, and particularly in that of the Tao-Kiao (Taosse) sect, “persons who withdraw to the hills to lead the life of anchorites, and who have attained, either through their ascetic observances or by the power of charms and elixirs, to the possession of miraculous gifts and of terrestrial immortality.” (?) This is exaggerated if not altogether erroneous. What they claim, is merely their ability to prolong human life; and they can do so, if we have to believe human testimony.
What Marco Polo testifies to in the thirteenth century is corroborated in our own days. “There are another class of people called Chughi” (Yogi), he says, “who are indeed properly called Abraiamans (Brahmans) who are extremely long-lived, every man of them living to 150 or 200 years. They eat very little, rice and milk chiefly. And these people make use of a very strange beverage, a potion of sulphur and quicksilver mixed together, and this they drink twice every month. …This, they say, gives them long life; and it is a potion they are used to taking from their childhood.”
Bernier shows, says Colonel Yule, the Yogis very skillful in preparing mercury “so admirably that one or two grains taken every morning restored the body to perfect health”; and adds that the mercurius vitae of Paracelsus was a compound in which entered antimony and quicksilver. This is a very careless statement, to say the least, and we will explain what we know of it.
The longevity of some lamas and Talapoins is proverbial; and it is generally known that they use some compound which “renews the old blood”, as they call it. And it was equally a recognized fact with alchemists that a judicious administration, “of aura of silver does restore health and prolongs life itself to a wonderful extent.” But we are fully prepared to oppose the statements of both Bernier and Colonel Yule who quotes him, that it is mercury or quicksilver which the Yogis and the alchemists used. The Yogis, in the days of Marco Polo, as well as in our modern times, do use that which may appear to be quicksilver, but is not. Paracelsus, the alchemists, and other mystics, meant by mercurius vitae, the living spirit of silver, the aura of silver, not the argent vive; and this aura is certainly not the mercury known to our physicians and druggists. There can be no doubt that the imputation that Paracelsus introduced mercury into medical practice is utterly incorrect.
No mercury, whether prepared by a mediaeval fire philosopher or a modern self-styled physician, can or ever did restore the body to perfect health. Only an unmitigated charlatan ever will use such a drug. And it is the opinion of many that it is just with the wicked intention of presenting Paracelsus in the eyes of posterity as a quack, that his enemies have invented such a preposterous lie. The Yogis of the olden times, as well as modern lamas and Talapoins, use a certain ingredient with a minimum of sulphur, and a milky juice which they extract from a medicinal plant. They must certainly be possessed of some wonderful secrets, as we have seen them healing the most rebellious wounds in a few days; restoring broken bones to good use in as many hours as it would take days to do by means of common surgery.
A fearful fever contracted by the writer near Rangoon, after a flood of the Irrawaddy River, was cured in a few hours by the juice of a plant called, if we mistake not, Kukushan, though there may be thousands of natives ignorant of its virtues who are left to die of fever. This was in return for a trifling kindness we had done to a simple mendicant; a service which can interest the reader but little.
We have heard of a certain water, also, called ab-i-hayat, which the popular superstition thinks hidden from every mortal eye, except that of the holy sannyasi; the fountain itself being known as the ab-i-haiwan-i. It is more than probable though, that the Talapoins will decline to deliver up their secrets, even to academicians and missionaries; as these remedies must be used for the benefit of humanity, never for money.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 