Tag Archives: science

Gilbert White’s tenpenny nails.

A flint wall in Kent, fastened with our version of ‘tenpenny nails’, smooth pebbles from the beach or riverbed.

In Wolmer-forest I see but one sort of stone, called by the workmen sand, or forest-stone. This is generally of the colour of rusty iron, and might probably be worked as iron ore; is very hard and heavy, and of a firm, compact texture, and composed of a small roundish crystalline grit, cemented together by a brown, terrene, ferruginous matter; will not cut without difficulty, nor easily strike fire with steel.

Being often found in broad flat pieces, it makes good pavement for paths about houses, never becoming slippery in frost or rain; is excellent for dry walls, and is sometimes used in buildings. In many parts of that waste it lies scattered on the surface of the ground; but is dug on Weaver’s-down, a vast hill on the eastern verge of that forest, where the pits are shallow, and the stratum thin. This stone is imperishable.

From a notion of rendering their work the more elegant, and giving it a finish, masons chip this stone into small fragments about the size of the head of a large nail; and then stick the pieces into the wet mortar along the joints of their freestone walls: this embellishment carries an odd appearance, and has occasioned strangers sometimes to ask us pleasantly, ‘whether we fastened our walls together with tenpenny nails.’

“The Natural History of Selborne” by Gilbert White

This old wall in Kent is made of a quite different stone: flint, but it will be seen that Kentish builders, too, liked to fasten their walls together with tenpenny nails!

Hospitality towards Barn Owls

At Trotton Place lived Arthur Edward Knox, whose Ornithological Rambles in Sussex, published in 1849, is one of the few books worthy to stand beside White’s Natural History of Selborne. In Sussex, as elsewhere, the fowler has prevailed, and although rare birds are still occasionally to be seen, they now visit the country only by accident, and leave it as soon as may be, thankful to have a whole skin.

Guns were active enough in Knox’s time, but to read his book to-day is to be translated to a new land. From time to time I shall borrow from Mr. Knox’s pages: here I may quote a short passage which refers at once to his home and to his attitude to those creatures whom he loved to study and studied to love:—

“I have the satisfaction of exercising the rites of hospitality towards a pair of barn owls, which have for some time taken up their quarters in one of the attic roofs of the ancient, ivy-covered house in which I reside. I delight in listening to the prolonged snoring of the young when I ascend the old oak stairs to the neighbourhood of their nursery, and in hearing the shriek of the parent birds on the calm summer nights as they pass to and fro near my window; for it assures me that they are still safe; and as I know that at least a qualified protection is afforded them elsewhere, and that even their arch-enemy the gamekeeper is beginning reluctantly, but gradually, to acquiesce in the general belief of their innocence and utility, I cannot help indulging the hope that this bird will eventually meet with that general encouragement and protection to which its eminent services so richly entitle it.”

There is a naive verbosity about some writers of Edwardian times, as we British count the XX Century before the Great War. This passage is from “Highways and Byways in Sussex” by E. V. Lucas, 1904, but of course the passage from Knox is older still. I hope both men would appreciate today’s general good will and legal protection towards birds and the scientific study of them, but both men could tell us something of what has been lost in the years since then. We should be less complacent.

Driving a wedge between science and religion has got to stop.

If you are interested in the area where science and religion overlap, here is a debate forwarded from the Sacred Space website. Despite the eminence of the academics writing here, and the name dropping of scientists I’d not heard of alongside some I was familiar with, this is a readable and interesting discussion.

Will.

Starry night?

 

bluemoon

A London night sky.

AS we in the northern hemisphere enter Advent and the darker days of winter, here is a thought-provoking article about light pollution, dark skies, astronomy, and being human and humble creatures. And what we miss through our obsessive use of street lighting. Read and ponder. Would the wise men have seen the Christmas star today?

hop little froglets, hop, hop, hop!

frog.pond.spawn

A message just came from the Butterflies class, who have been observing and caring for some of the frogspawn in this picture.

There are five froglets and a few tadpoles with legs! Great excitement in the classroom, but the children know the froglets and their brothers and sisters will soon be coming back to their native pond. For certain sure, more of them have survived than if they had been in the pond at the mercy of Mr Blackbird.

Thank you Butterflies class and your marvellous teacher!

A Frog for the Butterflies

frog.pond.spawn

Miss Turnstone teaches the butterflies, a reception class of 4-5 year-olds. and every year takes some spawn to school so they can watch the tadpoles develop. The frog spawn comes from her mother’s pond.

Hoping to get a photograph for them, I found myself beset with reflections wherever I squatted myself down. Having rejected my snaps altogether, I tried for just one more. This frog chose that moment to swim across the mass of eggs in the bottom of the pond, and gave us an action shot. Not great, but good enough.

The clear water in the pond suggests that it is more than good enough; there’s plenty of weed to start the tadpoles off in life, but we do need to keep a weather eye out for frost. Once the eggs are afloat we could lose a lot to freezing conditions. We’ll live in hope and be ready to help.

‘It makes it bigger.’

spoon bigger

I was dining alone with 3½ tear old Abel the other day, when he put a spoon into his glass of water. (His mother need not know about the 50 year old toy truck that helped feed him by ferrying grapes across the table.)

‘It makes it bigger’, Abel announced of his spoon in the water, so taken with this that he did not notice the photograph being taken,

‘Like your magnifying glass’, I suggested. He considered this for a moment. ‘My magnifying glass is missing.’ I feel sure he knows exactly where it is. He seems to think that things like to hide. Under the piano is a good spot.

But note the budding scientist: don’t tell him he’s wrong, when he is simply not in possession of enough facts and enough vocabulary to say more clearly what is happening. Let’s see if he can find that magnifying glass!

river.upmill.over.stones

This is the River Tame, brown with peat, passing through Uppermill, Saddleworth, last week. What looks like a weir is a set of stepping stones. I thought such things were imaginary when I was little, as they tended to appear in the sort of story books our teachers thought we should like.

Now there’s a set I can walk across any time I visit my mother.

Well, not every time, as you can see. But there is a bridge very near by, so no great hardship involved.

And yet the river has been known to rise much higher than this, when the upstream flood plain is saturated, and the rain keeps on falling. The bridge then cannot accommodate all the water that pours down; it tries to find other ways through. People get the sandbags out.

It rains a lot in Saddleworth!

So thank heaven the powers that be seem finally to have decided against covering the flood plain with concrete and buildings for a new school!

 

Designer Snail

designer snail

Working at the Glebe, working with flowers, we have ample opportunity to appreciate the little things. Like this snail, this ‘designer snail’ as Anne called it. Those stripes would make this shell a treasure if found on a Red Sea beach, but this snail was in the wrong place, eating the wrong plants …

I remember, years ago, reading an article where a science teacher was desperately trying to account for the very different shell patterns of this species in terms of Darwinian evolution; some even have no stripes at all. She seemed to be saying that they must be of some evolutionary benefit or they would not still exist.

Well, the humans at the Glebe admired the creature. But don’t tell the Jehovah’s Witnesses that we called it a designer snail!

HOLY OF HOLIES

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The Holy of Holies refers of course to the innermost chamber of the Temple in Jerusalem – and before that in the tent that went through the desert with the Israelites. Blake reminded us that God is present in a grain of sand; here is Chesterton meeting him on a Spring morning. These cowslips are growing in pastureland, where sheep will safely graze later in the year. We were told that the farmer seeded the field with wild flowers. Thank you to him!

‘Elder father, though thine eyes
Shine with hoary mysteries,
Canst thou tell what in the heart
Of a cowslip blossom lies?’

 

‘Smaller than all lives that be,
Secret as the deepest sea,
Stands a little house of seeds,
Like an elfin’s granary,

‘Speller of the stones and weeds,
Skilled in Nature’s crafts and creeds,
Tell me what is in the heart
Of the smallest of the seeds.’

‘God Almighty, and with Him
Cherubim and Seraphim,
Filling all eternity—
Adonai Elohim.’