But of all the novelties that excite my own interest in the expanding astronomy of recent times, the most delightful and promising are those charming little pyrotechnic planetoids,[Footnote: _'Pyrotechnic Planetoids:'_--The reader will understand me as alluding to the periodic shooting stars. It is now well known, that as, upon our own poor little earthly ocean, we fall in with certain phenomena as we approach certain latitudes; so also upon the great ocean navigated by our Earth, we fall in with prodigious showers of these meteors at periods no longer uncertain, but fixed as jail-deliveries. 'These remarkable showers of meteors,' says Dr. Nichol, 'observed at different periods in August and November, seem to demonstrate the fact, that, at these periods, we have come in contact with two streams of such planetoids then intersecting the earth's orbit.' If they intermit, it is only because they are shifting their nodes, or points of intersection.] that variegate our annual course. It always struck me as most disgusting, that, in going round the sun, we must be passing continually over old roads, and yet we had no means of establishing an acquaintance with them: they might as well be new for every trip. Those chambers of ether, through which we are tearing along night and day, (for _our_ train stops at no stations,) doubtless, if we could put some mark upon them, must be old fellows perfectly liable to recognition. I suppose, _they_ never have notice to quit. And yet, for want of such a mark, though all our lives flying past them and through them, we can never challenge them as known. The same thing happens in the desert: one monotonous iteration of sand, sand, sand, unless where some miserable fountain stagnates, forbids all approach to familiarity: nothing is circumstantiated or differenced: travel it for three generations, and you are no nearer to identification of its parts: so that it amounts to travelling through an abstract idea. For the desert, really I suspect the thing is hopeless: but, as regards our planetary orbit, matters are mending: for the last six or seven years I have heard of these fiery showers, but indeed I cannot say how much earlier they were first noticed,[Footnote: Somewhere I have seen it remarked, that if, on a public road, you meet a party of four women, it is at least fifty to one that they are all laughing; whereas, if you meet an equal party of my own unhappy sex, you may wager safely that they are talking gravely, and that one of them is uttering the word _money_. Hence it must be, viz, because our sisters are too much occupied with the playful things of this earth, and our brothers with its gravities, that neither party sufficiently watches the skies. And _that_ accounts for a fact which often has struck myself, viz., that, in cities, on bright moonless nights, when some brilliant skirmishings of the Aurora are exhibiting, or even a luminous arch,