Max KleiberIn science, Max Kleiber (1893-1976) was a Swiss-born American agricultural chemist and animal metabolism researcher noted for his 1961 The Fire of Life: an Introduction to Animal Energetics, wherein he cites the work of Gilbert Lewis (1923) the 1957 energetics of biochemical reactions work of Irving Klotz, among others. [1]

Kleiber’s law
In 1947, Kleiber published “Body Size and Metabolic Rate”, wherein, in an effort to correct assertions about “non-uniformity in heat production” of various animals by size made in Francis Benedict’s 1938 Vital Energetics, gave the following chart showing heat produced by organisms versus body size: [3]

Kleiber's law

Kleiber, in short, showed that an animal’s "metabolic rate", or specifically basil metabolic rate (BMR), in contrast to resting metabolic rate (RMR), scales to the three-quarter’s power of the animal’s mass: [4]

 R_{BM} \propto M^\frac{3}{4} \,
The Fire of Life
The cover of Kleiber's 1961 book The Fire of Life, nearly boarders on some type of "living fire" or living flame conceptualized presentation.

Education
Kleiber completed his BS in agricultural chemistry in 1920 and his PhD in 1924 with a thesis on “The Energy Concept in Science Nutrition”, after which in 1929 he joined the animal husbandry department of University of California, Davis, where he build respiration chambers and did research on energy metabolism in animals.

Quotes | Tributes
The following are related summary quotes:

Biology was reconstructed on thermodynamic grounds in the 1920s through the work of A.G. Tansley, Edgar Transeau, Max Kleiber, and others who began conceiving of organisms as energy fixers or consumers and of natural systems as complex webs of energy flows and transformations, thereby developing the modern science of ecology. Alfred Lotka and Howard Odum extended the approach, pointing to the role that energy appropriation plays in evolution: individuals and species that have the largest net energy surplus can dedicated more of their life energy to reproduction, outcompeting their rivals.”
Eric Zencey (2013), “Energy as Master Resource” [2]

References
1. (a) Kleiber, Max. (1961). The Fire of Life: an Introduction to Animal Energetics (thermodynamics, 15+ pgs). Wiley.
(b) Klotz, Irving. (1957). Some Principles of Energetics in Biochemical Reactions. Academic Press.
2. Zencey, Eric. (2013). “Energy as a Master Resource” (pdf), in: State of the World 2013: Is Sustainability Still Possible? (§7:##-; image, figure 1-2). Island Press, 2013.
3. (a) Benedict, Francis G. (1938). Vital Energetics: a Study of Comparative Basal Metabolism (pg. 194). Publisher.
(b) Kleiber, Max. (1947). “Body Size and Metabolic Rate” (abs) (pdf), Physiological Review, 27(4):511-41.
4. Balmer, Robert T. (2010). Modern Engineering Thermodynamics (Max Kleiber, pg. 703-). Academic Press.

External links
Max Kleiber – Wikipedia.
Kleiber, Max (1893-1976) – WorldCat Identities.

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