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Updated: June 2, 2025
We are indebted to Albert Michael, of the Linnean Society of England, for a masterly treatise on a group of acari, or mites, known as the oribatidæ. Many of these he has discovered. The one before you is a full grown nymph of what is known as a palmicinctum. It is deeply interesting as a form; but for us its interest is that it is minute, being only a millimeter in length.
The noise wasn't deafening, but it was certainly all-pervasive. Bart Stanton had reholstered his own weapon and half opened his lips to speak when he heard another sound behind him. Again he whirled his guns in hand both of them this time and his forefingers only fractions of a millimeter from the point that would fire the hair triggers. But he did not fire.
It is remarkable, also, that we are enabled to superpose and obtain the maximum effects on thin strips of iron from 1/4 to 1/2 millimeter in thickness, while in thicker rods we have far less effect, being masked by the comparatively neutral state of the interior, the exterior molecules then reaching upon those of the interior, allowing them to complete in the interior their circle of attractions.
I have found, however, that fine cast drill steel, untempered, of the kind employed by watchmakers, is most suitable; these are generally sold in straight lengths of 30 centimeters. Wires 1 millimeter in diameter should be used, and when it is desired to increase the force, several of these wires, say, nine or ten, should be formed into a single rod or bunch.
It had been thrilling. Everything had gone perfectly; not even Valkanhayn's gang had goofed. Then the screenviews had begun coming in. The brief and hopeless fight in the city. He could still see that silly little field gun, it must have been around seventy or eighty millimeter, on a high-wheeled carriage, drawn by six shaggy, bandy-legged beasts.
Do ye guess for a minute that if ye had been a rich man's son in grand clothes and manners to match I'd ever have tramped a millimeter with ye?" She smiled coaxingly. "Faith! there's naught the matter with those rags; a king's son might be proud o' them. As for foolishness, I've known worse faults in a man."
"It's a seven millimeter Mauser," said Douglass, quietly, "and there's only one such gun on this range. It's a pretty big payment on account, Red!" McVey's lips hardened but he evaded the other's eye. "Let's get the direction," he said, "and maybe we can work it out."
I took a screen made of zincblende, which will phosphoresce when the emanations of radium fall upon it. But the most striking way of showing the emanations is by the little contrivance I call a Spinthariscope. In this a zinc sulphide screen is fitted at the end of a short brass tube, with a speck of radium about a millimeter away from it.
This is obtained by the Wollaston process, that is to say, a piece of coarse platinum wire is covered with a stout coating of silver, and drawn down till the outside diameter is 1/10 millimeter. The silver coating is then dissolved in a bath of nitric acid, and the platinum wire is left behind.
De Launay looked over the stock of weapons and asked to see an automatic pistol. The clerk laid an army model forty-five on the counter and beside it another of somewhat similar appearance but some distinct differences. "A Mauser," he explained. "Lot of them come in since the war and it's a good gun." "Eight millimeter!" said De Launay, idly picking up the familiar pistol.
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