But never you mind that. The point is that when you have the right amount of snow in you, you can’t feel anything in the ordinary sense of the word. You appreciate it in a sort of impersonal way. There’s a pain, but the pain doesn’t hurt. You enjoy the fact of the pain as you enjoy reading about all sorts of terrible things in history at school.

But the trouble about cocaine is this; that it’s almost impossible to take it in moderation as almost any one, except an American, can take whisky. Every dose makes you better and better. It destroys one’s power of calculation.

We had already discovered the fact when we found that the supply we had got from Gretel, with the idea that it would last almost indefinitely, was running very short, when the dressing-gown came to solve the problem.

We had only been a few days on the stunt, and what we had got from three or four sniffs, to begin with, meant almost perpetual stoking to carry on. However, that didn’t matter, because we had an ample supply. There must have been a couple of kilograms of either C. or H. in that kimono. And when you think that an eight of a gain is rather a big dose of H., you can easily calculate what a wonderful time you can have on a pound.

You remember how it goes — twenty grains one penny-weight, three penny-weights one scruple — I forget how many scruples one drachm, eight drachms one ounce, twelve ounces one pound.

I’ve got it all wrong. I could never understand English weights and measures. I have never met any one who could. But the point is you could go on a long time on one-eighth of a grain if you have a pound of the stuff.

Well, this will put it all right for you. Fifteen grains is one gramme, and a thousand grammes is a kilogramme, and a kilogramme is two point two pounds. The only thing I’m not sure about is whether it’s a sixteen-ounce pound or a twelve-ounce pound. But I don’t see what it matters anyway, if you’ve got a pound of snow or H. you can go on for a long while, but apparently it’s rather awkward orchestrating them.

Quain says that people accustomed to opium and its derivatives can take an enormous amount of cocaine without any bother. In the ordinary way, half a grain of cocaine can cause death, but we were taking the stuff with absolute carelessness.

One doesn’t think of measuring it as one would if one took it by hypodermic. One just takes a dose when one feels one needs it. After all, that;s the rule of nature. Eat when you’re hungry. Nothing is worse for the health than settling down to a fixed ration of so many meals a day.

The grand old British principle of three meat meals has caused the supply of uric acid to exceed the demand in a most reprehensible manner.

Physiology and economics, and, I should think, even geology, combine to protest.

Now we were living an absolutely wholesome life. We took a sniff of cocaine whenever the pace slackened up, and one of heroin when the cocaine showed any signs of taking the bit in its teeth.

What one needs is sound common sense to take reasonable measures according to the physiological indications. One needs elasticity. It’s simply spiritual socialism to tie oneself down to fixed doses whether one needs them or not. Nature is the best guide. We had got on to the game.