Samuel Wells Mary Treat and Frederick Le

Through a Microscope - The Original Classic Edition (eBook, ePUB)

• Format: ePub

Produktbeschreibung

Through a Microscope by Samuel Wells Mary Treat and Frederick Leroy Sargent - The Original Classic Edition

Finally available, a high quality book of the original classic edition.

This is a new and freshly published edition of this culturally important work, which is now, at last, again available to you.

Enjoy this classic work today. These selected paragraphs distill the contents and give you a quick look inside:

When you have got that right so that you see a boy on the sidewalk upside down and see his teeth when he laughs, put some small object, the little doll will do, about three feet in front of your lens, and you will find the image of it is blurred and indistinct, and that[11] you must pull your tube out to get the focus on the doll; or if you had another lens of just the right shape to hold in front of your camera, you would with that get the focus on the doll.

...With a large hand-lens, you can see a whole fly at once and magnify it two or three times; but when you put it on the stage of your compound microscope and try to magnify it still more, you will find that you can only see a part of it at a time, and the higher the power you use, the less can you see; in[24] other words, the more you magnify an object, the smaller is the field of view.

...The best way to get at the minute objects in this or any water that is supplied through pipes, is to make a bag of cotton cloth, not too fine, well washed in water without soap, about a foot long, large enough at the top to slip over a faucet that has a screw on it (like the common kitchen faucet adapted for a filter), so that it can be tied with a string, and small enough at the bottom to be tied on to the neck of a small bottle such as is used for[27] homoeopathic pills.

...You will find in examining the filterings of Cochituate water, many objects which have not been described in these papers, and among them many fragments of green filaments of the small plants belonging to the confervæ and the oscillatoriæ; sometimes you will find small round opaque forms of brown or green color, which are probably spores of plants of a larger growth; sometimes you will see the pollen of pine-trees which has fallen into the water and looks like three small balls fastened together; sometimes, though rarely, you may find one of those curious little creatures called water bears, or tardigrada; and you may be fortunate enough to catch a water spider.

...Sometimes he stands on the tip of one toe and throws his body[72] forward, or from side to side with a rapid motion; then straightening himself up, he stands on the tips of both toes as if posing, remaining perfectly still for a few moments and giving us an opportunity to take a good look at his curious body which is encased in a pretty vase-shaped, three-sided transparent shell.

---

Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, D ausgeliefert werden.

Produktdetails

• Verlag: Emereo Publishing
• Seitenzahl: 28
• Erscheinungstermin: 24. Oktober 2012
• Englisch
• ISBN-13: 9781486417520
• Artikelnr.: 49502549