Foreign Phosphates, Being a Lecture Delivered Before the Young Men's Christian Association, April 21, 1879
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The deposit was small and has been sent wholly to Hamburg. It has been in all probability ere this exhausted.
FOSSIL BONES AND COPROLITES.
Without dwelling on fossil bones, since separate deposits of this character are rare and small, we will pass at once to coprolites.
The true coprolites are generally two to four inches long, one to two inches in diameter, gray to black in color, and have the shape of kidneys. Internally they exhibit an earthy, dense structure like hardened clay, with aconcho...idal and brilliant fracture. " They often contain the scales, teeth and bones of fish, which represent the undigested portions of food voided in the excrement ; and they are occasionally found in such connection with the skeletons of fossil saurians as to show their original position in the in- testines." The investigation of these rounded fossil ex- crements proves that they were once finely ground, and when in a soft state were twisted spirally from center to periphery, and that then they received (in the intestines of animals) the ridges and corrugations that mark their surface.
What to read after Foreign Phosphates, Being a Lecture Delivered Before the Young Men's Christian Association, April 21, 1879?
You can find similar books in the "Read Also" column, or choose other free books by Charles Upham Shepard to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The deposit was small and has been sent wholly to Hamburg. It has been in all probability ere this exhausted.
FOSSIL BONES AND COPROLITES.
Without dwelling on fossil bones, since separate deposits of this character are rare and small, we will pass at once to coprolites.
The true coprolites are generally two to four inches long, one to two inches in diameter, gray to black in color, and have the shape of kidneys. Internally they exhibit an earthy, dense structure like hardened clay, with aconcho...idal and brilliant fracture. " They often contain the scales, teeth and bones of fish, which represent the undigested portions of food voided in the excrement ; and they are occasionally found in such connection with the skeletons of fossil saurians as to show their original position in the in- testines." The investigation of these rounded fossil ex- crements proves that they were once finely ground, and when in a soft state were twisted spirally from center to periphery, and that then they received (in the intestines of animals) the ridges and corrugations that mark their surface.
What to read after Foreign Phosphates, Being a Lecture Delivered Before the Young Men's Christian Association, April 21, 1879?
You can find similar books in the "Read Also" column, or choose other free books by Charles Upham Shepard to read onlineMoreLess
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