Before becoming famous as a writer of children's books (most notably the ever-popular tales of Christopher Robin and Winnie-the-Pooh), A.A. Milne was an assistant editor of the British humor magazine Punch--a position he left because he grew tired of having to be "whimsical" once a week. "[T]his sort of writing," he wrote in the foreword to The Sunny Side (1921), "depends largely upon the irresponsibility and high spirits of youth for its success, and I want to stop before . . . the high spirits become mechanical and the irresponsibility a trick."

In this humorous essay (which appeared in the collection Not That It Matters in 1919), Milne writes delightfully about his youthful misadventures as an amateur scientist.

Natural Science

by A.A. Milne

It is when Parliament is not sitting that the papers are most interesting to read. I have found an item of news to-day which would never have been given publicity in the busy times, and it has moved me strangely. Here it is, backed by the authority of Dr. Chalmers Mitchell:

"The caterpillar of the puss-moth, not satisfied with Nature's provisions for its safety, makes faces at young birds, and is said to alarm them considerably."

I like that "is said to." Probably the young bird would deny indignantly that he was alarmed, and would explain that he was only going away because he suddenly remembered that he had an engagement on the croquet lawn, or that he had forgotten his umbrella. But whether he alarms them or not, the fact remains that the caterpillar of the puss-moth does make faces at young birds; and we may be pretty sure that, even if he began the practice in self-defence, the habit is one that has grown on him.

Indeed, I can see him actually looking out for a thrush's nest, and then climbing up to it, popping his head over the edge suddenly and making a face. Probably, too, the mother birds frighten their young ones by telling them that, if they aren't good, the puss-moth caterpillar will be after them; while the poor caterpillar himself, never having known a mother's care, has had no one to tell him that if he goes on making such awful faces he will be struck like that one day.

These delvings into natural history bring back my youth very vividly. I never kept a puss-moth, but I had a goat-moth which ate its way out of a match-box, and as far as I remember took all the matches with it. There were caterpillars, though, of a gentler nature who stayed with me, and of these some were obliging enough to turn into chrysalises. Not all by any means. A caterpillar is too modest to care about changing in public. To conduct his metamorphosis in some quiet corner--where he is not poked every morning to see if he is getting stiffer--is what your caterpillar really wants. Mine had no private life to mention. They were as much before the world as royalty or an actress. And even those who brought off the first event safely never emerged into the butterfly world. Something would always happen to them. "Have you seen my chrysalis?" we used to ask each other. "I left him in the bathroom yesterday."

But what I kept most successfully were minerals. One is or is not a successful mineralogist according as one is or is not allowed a geological hammer. I had a geological hammer. To scour the cliffs armed with a geological hammer and a bag for specimens is to be a king among boys. The only specimen I can remember taking with my hammer was a small piece of shin. That was enough, however, to end my career as a successful mineralogist. As an unsuccessful one I persevered for some months, and eventually had a collection of eighteen units. They were put out on the bed every evening in order of size, and ranged from a large lump of Iceland spar down to a small dead periwinkle. In those days I could have told you what granite was made of. In those days I had over my bed a map of the geological strata of the district--in different colours like a chocolate macaroon. And in those days I knew my way to the Geological Museum.

As a botanist I never really shone, but two of us joined an open-air course and used to be taken expeditions into Kew Gardens and such places, where our lecturer explained to his pupils--all grown-up save ourselves--the less recondite mysteries. There was one golden Saturday when we missed the rendezvous at Pinner and had a picnic by ourselves instead; and, after that, many other golden Saturdays when some unaccountable accident separated us from the party. I remember particularly a day in Highgate Woods--a good place for losing a botanical lecturer in; if you had been there, you would have seen two little boys very content, lying one each side of a large stone slab, racing caterpillars against each other.

But there was one episode in my career as a natural scientist--a career whose least details are brought back by the magic word, caterpillar--over which I still go hot with the sense of failure. This was an attempt to stuff a toad. I don't know to this day if toads can be stuffed, but when our toad died he had to be commemorated in some way, and, failing a marble statue, it seemed good to stuff him. It was when we had got the skin off him that we began to realize our difficulties. I don't know if you have had the skin of a fair-sized toad in your hand; if so, you will understand that our first feeling was one of surprise that a whole toad could ever have got into it. There seemed to be no shape about the thing at all. You could have carried it--no doubt we did, I have forgotten--in the back of a watch. But it had lost all likeness to a toad, and it was obvious that stuffing meant nothing to it.

Of course, little boys ought not to skin toads and carry geological hammers and deceive learned professors of botany; I know it is wrong. And of course caterpillars of the puss-moth variety oughtn't to make faces at timid young thrushes. But it is just these things which make such pleasant memories afterwards--when professors and toads are departed, when the hammers lie rusty in the coal cellar, and when the young thrushes are grown up to be quite big birds.
 
More Essays by A.A. Milne:

• The Diary Habit
• A Word for Autumn