Bibliography 



Lemberg, R., and Legge, J. W. (1949). Hematin compounds and bile pigments. 



New York: Interscience Publications. {166) 

 Lepeschkin, W. W. (1931). 'Death and its causes.' Quart. Rev. Biol., 6, 



167. (7, 34) 

 Leslie, P. H., and Ranson, R. M. (1940). 'The mortality, fertility and rate 



of natural increase of the vole (Microtus agrestis) as observed in the 



laboratory.' J. Anim. Ecol., 9, 27. (24, 43, 108, 109) 

 Liebers, R. (1937). 'Beitragezur Biologie der Radertiere: Untersuchungen 



an Euchlanis dilatata und Proales decipiens.' %. wiss. £ool., 150, 206. (59) 

 Lilly, M. M. (1953). 'The mode of life and the structure and functioning 



of the reproductive ducts of Bithynia tentaculata (L).' Proc. malac. Soc. Lond., 



30, 87. (103) 

 Lindsay, E. (1940). 'The biology of the silverfish, Ctenolepisma longicaudata 



Esch. with particular reference to its feeding habits.' Proc. Roy. Soc. 



Victoria, 52, 35. (57) 

 Linsley, E. G. (1938). 'Longevity in the Cerambycidae.' Pan-Pacif. Ent., 



14, 177. (57) 

 Lobban, M. C. (1952). 'Structural variations in the adrenal cortex of the 



cat.' J. Physiol, 118, 565. (167) 

 Loeb, J. (1908). 'Uber den TemperaturkoefHzienten fur die Lebensdauer 



kaltblutiger Thiere usw.' Pflugers Arch., 124, 411. (10, 138) 

 Loeb, J., and Northrop, J. H. (1917). 'On the influence of food and tem- 

 perature on the duration of life.' J. biol. Chem., 32, 103. (8, 138, 143) 

 Loeb, L. (1944) . Hormones and the process of ageing. Harvey Lecture, 36, 228. (173) 

 Long, J. A., and Evans, H. M. (1922). 'The estrous cycle in the rat and its 



associated phenomena.' Mem. Univ. Calif., 6. (179) 

 Longstaff, J. (1921). 'Observations on the habits of Cochlitoma zebra var. 



fulgurata Pfr. and obesa Pfr. in confinement.' Proc. zool. Soc. Lond., 379. 



(1921). (58) 

 Lorand, A. (1904). 'Quelques considerations sur les causes de la senilite.' 



C.R. Soc. biol. Paris, 57, 500. (7) 



(1929). 'La role de l'autointoxication intestinale dans la production 



de la vieillesse.' Clinique, Paris, 24, 205. (7) 

 Lorenz, T. W., and Lerner, I. (1946). 'Inheritance of sexual maturity in 



male chickens and turkeys.' Poult. Sci., 25, 188. (180) 

 Lowry, O. H., and Hastings, A. B. (1952). 'Quantitative histochemical 



changes in ageing.' In Cowdry, E. V., Problems of Ageing. Williams and 



Wilkins Co. (30) 

 Luk'yanov, V. S. (1952). JlyKLHHOB, B.C.: 'O coxpaHemie 3ji;opoBbH h 



pa6oTOCnoco6HOCTM.' (The preservation of health and work-capacity.) 



Medgiz, Moscow. (61) 

 Lyepesghinskaya, O. B. (1950). JlenecmiHCKan, O.B.: 'IIpoH3xo>KfleHHe 



KJieTOK H3 TKHBoro BemecTBa pojib TKHBoro BemecTBa b opraHH3Me.' 



(Production of cells from living matter and the role of living matter in 



the organism). Acad. Med. Sci. USSR. Moscow. 2nd edn. (115) 



224 



