SPHERICAL URINE IN BIRDS - PETROGRAPHY

被引：20

作者：

FOLK, RL

机构：

[1] Geology Department, University of Texas, Austin

来源：

SCIENCE | 1969年 / 166卷 / 3912期

关键词：

D O I：

10.1126/science.166.3912.1516

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The white part of bird droppings (the urine) consists of microscopically uniform spheres 2 to 8 micrometers in diameter. Strange behavior of the spheres in polarized light indicates that they are often made of a spiraling arrangement of crystals that are particularly well revealed by the electron microscope. Bird urine has a varied composition, and x-ray analysis shows that it does not consist largely of uric acid, as has frequently been parroted.

引用

页码：1516 / &

共 19 条

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[2]

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[3]

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[4]

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[5]

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[6]

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[7]

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[8]

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[9]

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[10] STUDIES IN UROLITHIASIS .1. THE COMPOSITION OF URINARY CALCULI [J].

PRIEN, EL ;

FRONDEL, C .

JOURNAL OF UROLOGY, 1947, 57 (06) :949-994

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