`IN Science--in fact, in most things--it is usually bestto begin at the beginning. In some things, of course, it's better to beginat the other end. For instance, if you wanted to paint a dog green, itmight be best to begin with the tail, as it doesn't bite at that end. Andso--'

`May I help oo?' Bruno interrupted.

`Help me to do what?' said the puzzled Professor, lookingup for a moment, but keeping his finger on the book he was reading from,so as not to lose his place.

`To paint a dog green!' cried Bruno. `Oo can begin wizits mouf, and I'll--'

`No, no!' said the Professor. `We haven't got to the Experimentsyet. And so,' returning to his note-book, `I'll give you the Axioms ofScience. After that I shall exhibit some Specimens. Then I shall explaina Process or two. And I shall conclude with a few Experiments. An Axiom,you know, is a thing that you accept without contradiction. For instance,if I were to say "Here we are!", that would be accepted without any contradiction,and it's a nice sort of remark to begin a conversation with. So it wouldbe an Axiom. Or again, supposing I were to say, "Here we are not!", thatwould be--'

`--a fib!' cried Bruno.

`Oh, Bruno!' said Sylvie in a warning whisper. `Of courseit would be an Axiom, if the Professor said it!'

`--that would be accepted, if people were civil,' continuedthe Professor; `so it would be another Axiom.'

`It might be an Axledum,' Bruno said: `but it wouldn'tbe true!'

`Ignorance of Axioms,' the Lecturer continued, `is a greatdrawback in life. It wastes so much time to have to say them over and overagain. For instance, take the Axiom, "Nothing is greater than itself";that is, "Nothing can contain itself". How often you hear people say "Hewas so excited, he was quite unable to contain himself." Why, of coursehe was unable! The excitement had nothing to do with it!'

`I say, look here, you know!' said the Emperor, who wasgetting a little restless. `How many Axioms are you going to give us? Atthis rate, we sha'n't get to the Experiments till to-morrow-week!'

`Oh, sooner than that, I assure you!' the Professor replied,looking up in alarm. `There are only,' (he referred to his notes again)`only two more, that are really necessary.'

`Read 'em out, and get on to the Specimens,' grumbledthe Emperor.

`The First Axiom,' the Professor read out in a great hurry,`consists of these words, "Whatever is, is." And the Second consists ofthese words, "Whatever isn't, isn't." We will now go on to the Specimens.The first tray contains Crystals and other Things.' He drew it towardshim, and again referred to his notebook. `Some of the labels--owing toinsufficient adhesion --' Here he stopped again, and carefully examinedthe page with his eye-glass. `I ca'n't read the rest of the sentence,'he said at last, `but it means that the labels have come loose, and theThings have got mixed--'

`Let me stick 'em on again!' cried Bruno eagerly, andbegan licking them, like postage-stamps, and dabbing them down upon theCrystals and the other Things. But the Professor hastily moved the trayout of his reach. `They might get fixed to the wrong Specimens, you know!'he said.

`Oo shouldn't have any wrong peppermints in the tray!'Bruno boldly replied. `Should he, Sylvie?'

But Sylvie only shook her head.

The Professor heard him not. He had taken up one of thebottles, and was carefully reading the label through his eye-glass. `Ourfirst Specimen--' he announced, as he placed the bottle in front of theother Things, `is--that is, it is called--' here he took it up, and examinedthe label again, as if he thought it might have changed since he last sawit, `is called Aqua Pura--common water--the fluid that cheers--'

`Hip! Hip! Hip!' the Head-Cook began enthusiastically.

`--but not inebriates!' the Professor went on quickly,but only just in time to check the "Hooroar!' which was beginning.

`Our second Specimen,' he went on, carefully opening asmall jar, `is--' here he removed the lid, and a large beetle instantlydarted out, and with an angry buzz went straight out of the Pavilion, `--is--orrather, I should say,' looking sadly into the empty jar, `it was--a curiouskind of Blue Beetle. Did anyone happen to remark--as it went past--threeblue spots under each wing?'

Nobody had remarked them.

`Ah, well!' the Professor said with a sigh. `It's a pity.Unless you remark that kind of thing at the moment, it's very apt to getoverlooked! The next Specimen, at any rate, will not fly away! It is--inshort, or perhaps, more correctly, at length--an Elephant. You will observe--'Here he beckoned to the Gardener to come up on the platform, and with hishelp began putting together what looked like an enormous dog-kennel, withshort tubes projecting out of it on both sides.

`But we've seen Elephants before,' the Emperor grumbled.

`Yes, but not through a Megaloscope!' the Professor eagerlyreplied, `You know you ca'n't see a Flea, properly, without a magnifying-glass--whatwe call a Microscope. Well, just in the same way, you ca'n't see an Elephant,properly, without a minimifying-glass. There's one in each of these littletubes. And this is a Megaloscope! The Gardener will now bring in the nextSpecimen. Please open both curtains, down at the end there, and make wayfor the Elephant!'

There was a general rush to the sides of the Pavilion,and all eyes were turned to the open end, watching for the return of theGardener, who had gone away singing `He thought he saw an Elephant Thatpractised on a Fife!' There was silence for a minute: and then his harshvoice was heard again in the distance. `He looked again--come up then!He looked again, and found it was--woa back! and found it was A letterfrom his--make way there! He's a-coming!'

And in marched or waddled--it is hard to say which isthe right word--an Elephant, on its hind-legs, and playing on an enormousfife which it held with its fore-feet.

The Professor hastily threw open a large door at the endof the Megaloscope, and the huge animal, at a signal from the Gardener,dropped the fife, and obediently trotted into the machine, the door ofwhich was at once shut by the Professor. `The Specimen is now ready forobservation!' he proclaimed. `It is exactly the size of the common Mouse--MusCommunis!'

There was a general rush to the tubes, and the spectatorswatched with delight the minikin creature, as it playfully coiled its trunkround the Professor's extended finger, finally taking its stand upon thepalm of his hand, while he carefully lifted it out, and carried it offto exhibit to the Imperial party.

`Isn't it a darling?' cried Bruno. `May I stroke it, please?I'll touch it welly gently!'

The Empress inspected it solemnly with her eye-glass.`It is very small,' she said in a deep voice. `Smaller than elephants usuallyare, I believe?'

The Professor gave a start of delighted surprise. `Why,that's true!' he murmured to himself. Then louder, turning to the audience,`Her Imperial Highness has made a remark which is perfectly sensible!'And a wild cheer arose from that vast multitude.

`The next Specimen,' the Professor proclaimed, after carefullyplacing the little elephant in the tray, among the Crystals and other things,`is a Flea, which we will enlarge for the purposes of observation.' Takinga small pill-box from the tray, he advanced to the Megaloscope, and reversedall the tubes. `The Specimen is ready!' he cried, with his eye at one ofthe tubes, while he carefully emptied the pill-box through a little holeat the side. `It is now the size of the Common Horse--Equus Communis!'

There was another general rush, to look through the tubes,and the Pavilion rang with shouts of delight, through which the Professor'sanxious tones could scarcely be heard. `Keep the door of the Microscopeshut!' he cried. `If the creature were to escape, this size, it would--'But the mischief was done. The door had swung open, and in another momentthe Monster had got out, and was trampling down the terrified, shriekingspectators.

But the Professor's presence of mind did not desert him.`Undraw those curtains!' he shouted. It was done. The Monster gatheredits legs together, and in one tremendous bound vanished into the sky.

`Where is it?' said the Emperor, rubbing his eyes.

`In the next Province, I fancy,' the Professor replied.`That jump would take it at least five miles! The next thing is to explaina Process or two. But I find there is hardly room enough to operate--thesmaller animal is rather in my way--'

`Who does he mean?' Bruno whispered to Sylvie.

`He means you!' Sylvie whispered back. `Hush!'

`Be kind enough to move--angularly--to this corner,' theProfessor said, addressing himself to Bruno.

Bruno hastily moved his chair in the direction indicated.`Did I move angrily enough?' he inquired. But the Professor was once moreabsorbed in his Lecture, which he was reading from his note-book.

`I will now explain the process of--the name is blotted,I'm sorry to say. It will be illustrated by a number of--of--' here heexamined the pages for some time, and at last said `It seems to be either"Experiments" or "Specimens"--'

`Let it be Experiments,' said the Emperor. `We've seenplenty of Specimens.'

`Certainly, certainly!' the Professor assented. `We willhave some Experiments.'

`May I do them?' Bruno eagerly asked.

`Oh dear no!' The Professor looked dismayed. `I reallydon't know what would happen if you did them!'

`Nor nobody doosn't know what'll happen if oo doos them!'Bruno retorted.

`Our First Experiment requires a Machine. It has two knobs--onlytwo -vou can count them, if vou like.'

The Head-Cook stepped forwards, counted them, and retiredsatisfied.

`Now you might press those two knobs together--but that'snot the way to do it. Or you might turn the Machine upside-down--but that'snot the way to do it!'

`What are the way to do it?' said Bruno, who was listeningvery attentively.

The Professor smiled benignantly. `Ah, yes!' he said,in a voice like the heading of a chapter. `The Way To Do It! Permit me!'and in a moment he had whisked Bruno upon the table. `I divide my subject,'he began, `into three parts--'

`I think I'll get down!' Bruno whispered to Sylvie. `Itaren't nice to be divided!'

`He hasn't got a knife, silly boy!' Sylvie whispered inreply. `Stand still! You'll break all the bottles!'

`The first part is to take hold of the knobs,' puttingthem into Bruno's hands. `The second part is--' Here he turned the handle,and, with a loud `Oh!', Bruno dropped both the knobs, and began rubbinghis elbows.

The Professor chuckled in delight. `It had a sensibleeffect. Hadn't it?' he enquired.

`No, it hadn't a sensible effect!' Bruno said indignantly.`It were very silly indeed. It jingled my elbows, and it banged my back,and it crinkled my hair, and it buzzed among my bones!"

`I'm sure it didn't!' said Sylvie. `You're only inventing!'

`Oo doesn't know nuffin about it!' Bruno replied. `Oowasn't there to see. Nobody ca'n't go among my bones. There isn't room.'

`Our Second Experiment,' the Professor announced, as Brunoreturned to his place, still thoughtfully rubbing his elbows, `is the productionof that seldom-seen-but-greatly-to-be-admired phenomenon, Black Light!You have seen White Light, Red Light, Green Light, and so on: but never,till this wonderful day, have any eyes but mine seen Black Light! Thisbox,' carefully lifting it upon the table, and covering it with a heapof blankets, `is quite full of it. The way I made it was this--I took alighted candle into a dark cupboard and shut the door. Of course the cupboardwas then full of Yellow Light. Then I took a bottle of Black ink, and pouredit over the candle: and, to my delight, every atom of the Yellow Lightturned Black! That was indeed the proudest moment of my life! Then I filleda box with it. And now--would anyone like to get under the blankets andsee it?'

Dead silence followed this appeal: but at last Bruno said`I'll get under, if it won't jingle my elbows.'

Satisfied on this point, Bruno crawled under the blankets,and, after a minute or two, crawled out again, very hot and dusty, andwith his hair in the wildest confusion.

`What did you see in the box?' Sylvie eagerly enquired.

`I saw nuffin!' Bruno sadly replied. `It were too dark!'

`He has described the appearance of the thing exactly!'the Professor exclaimed with enthusiasm. `Black Light, and Nothing, lookso extremely alike, at first sight, that I don't wonder he failed to distinguishthem! We will now proceed to the Third Experiment.'

The Professor came down, and led the way to where a posthad been driven firmly into the ground. To one side of the post was fasteneda chain, with an iron weight hooked on to the end of it, and from the otherside projected a piece of whalebone, with a ring at the end of it. `Thisis a most interesting Experiment!' the Professor announced. `It will needtime, I'm afraid: but that is a trifling disadvantage. Now observe. IfI were to unhook this weight, and let go, it would fall to the ground.You do not deny that?'

Nobody denied it.

`And in the same way, if I were to bend this piece ofwhalebone round the post--thus--and put the ring over this hook--thus--itstays bent: but, if I unhook it, it straightens itself again. You do notdeny that?'

Again, nobody denied it.

`Well, now, suppose we left things just as they are, fora long time. The force of the whalebone would get exhausted, you know,and it would stay bent, even when you unhooked it. Now, why shouldn't thesame thing happen with the weight? The whalebone gets so used to beingbent, that it ca'n't straighten itself any more. Why shouldn't the weightget so used to being held up, that it ca'n't fall any more? That's whatI want to know!'

`That's what we want to know!' echoed the crowd.

`How long must we wait?' grumbled the Emperor.

The Professor looked at his watch. `Well, I think a thousandyears will do to begin with,' he said. `Then we will cautiously unhookthe weight: and, if it still shows (as perhaps it will) a slight tendencyto fall, we will hook it for another thousand years.'

Here the Empress experienced one of those flashes of CommonSense which were the surprise of all around her. `Meanwhile there'll betime for another Experiment,' she said.

`There will indeed!' cried the delighted Professor. `Letus return to the platform, and proceed to the Fourth Experiment!'

`For this concluding Experiment, I will take a certainAlkali, or Acid--I forget which. Now you'll see what will happen when Imix it with Some--' here he took up a bottle, and looked at it doubtfully,`--when I mix it with--with Something--'

Here the Emperor interrupted. `What's the name of thestuff?' he asked.

`I don't remember the name,' said the Professor: `andthe label has come off.' He emptied it quickly into the other bottle, and,with a tremendous bang, both bottles flew to pieces, upsetting all themachines, and filling the Pavilion with thick black smoke. I sprang tomy feet in terror, and--and found myself standing before my solitary hearth,where the poker, dropping at last from the hand of the sleeper, had knockedover the tongs and the shovel, and had upset the kettle, filling the airwith clouds of steam. With a weary sigh, I betook myself to bed.