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Books Books 1 - 5 of 5 on ... it to a grindstone, and rotate it rapidly. The eye perceives neither color, but....
" ... it to a grindstone, and rotate it rapidly. The eye perceives neither color, but orange, — the secondary color. matters in the vitreous humor, popularly known as floating specks, or gossamer threads, look through a small pin-hole in a card at a bright... "
Intermediate Anatomy, Physiology and Hygiene: Including Scientific ... - Page 191
1887 - 221 pages
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Comprehensive Anatomy, Physiology, and Hygiene: Adapted for Schools ...

John Clarence Cutter - Human anatomy - 1888 - 384 pages
...the letters of No. II. are seen at two feet distance, at the same angle ; and so on, up to No. XX. The accompanying test-line is No. X., and should be...be able to read it at eleven or more feet distant (463). VZBDFHKOS 460. NEAR LIMIT AND FAR LIMIT. — In the normal (emmetropic) eye the near limit of...
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Young Folks' Physiology: A Revised Edition of Our Bodies and how We Live. An ...

Albert Franklin Blaisdell - Hygiene - 1892 - 412 pages
...threads, look through a small pin-hole in a card at a bright light covered by a ground-glass shade. 142. Test the eyes of the pupils by a set of Snellen's testtypes. The following test-line should be easily read at ten feet. Some pupils may be able to read it at a distance...
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Young Folks' Physiology: A Revised Edition of Our Bodies and how We Live. An ...

Albert Franklin Blaisdell - Hygiene - 1892 - 412 pages
...threads, look through a small pin-hole in a card at a bright light covered by a ground-glass shade. 142. Test the eyes of the pupils by a set of Snellen's testtypes. The following test-line should be easily read at ten feet. Some pupils may be able to read it at a distance...
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Our Bodies and how We Live: An Elementary Text-book of Physiology and ...

Physiology - 1893 - 412 pages
...threads, look through a small pin-hole in a card at a bright light covered by a ground-glass shade. 142. Test the eyes of the pupils by a set of Snellen's testtypes. The following test-line should be easily read at ten feet. Some pupils may be able to read it at a distance...
Full view - About this book

Comprehensive Anatomy, Physiology, and Hygiene: Adapted for Schools ...

John Clarence Cutter - Human anatomy - 1888 - 384 pages
...the letters of No. II. are seen at two feet distance, at the same angle ; and so on, up to No. XX. The accompanying test-line is No. X., and should be...be able to read it at eleven or more feet distant (463). VZBDFHKO 460. NEAR LIMIT AND FAR LIMIT. — In the normal (emmetropic) eye the near limit of...
Full view - About this book




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