INDEX 



Lankester, E. R. 11, 32-3, 57 



Lederberg, J. 102 



Lemche, H. 96 



Leslie, P. H. 21 



Levine, P. 123, 127 



life, expectation of 32-4, 42-5, 



49, 67 

 life table 21-2,33-7,48-51, 58- 



64 

 Lindsley, D. L. 172 

 Little, C. C. 160 

 Lloyd Morgan, C. 82 

 Loeb, L. 26, 95 

 Lorenz, K. 125 

 Lotka, A. J. 12, 21-2, 42, 139 

 Loutit, J. F. 172 

 Lovelock, J. E. 30 

 lymph nodes 157, 161, 170, 179- 



180 



MacBride, E. W. 25 



McCay, CM. 28 



McDougall, W. 94-8 



Mclndoe, A. 148 



malaria 126 



mammals, pregnancy 181-3 



senescence in 24-5, 32-5, 



56 



sizes of 110-2 



Matthews, L. H. 112 

 Medawar, P. B. 23-4, 86, 88, 



114, 161 

 melanism 96-7 

 melanocytes 86 

 memory 54 

 Mendel, G. 27 

 Metalnikov, S. 19 

 metatheory 74 

 Metchnikoff, E. 17, 24, 25 

 method, scientific 71-8 



Minot, C. 20-1, 23-4, 31, 47-8, 



116 

 Mirsky, A. E. 168 

 Mitchell, P. C. 24 

 Mitchison, N. A. 124, 157 

 Morant, G. M. 23, 115 

 mortality, force of 21-2, 33, 



36-9, 49-51 

 Muller, H. J. 91 

 MUller, J. 31 



Needham, J. 29 



Neel, J. V. 126 



nerve fibres 167-8 



Norton, H. T. J. 12 



Notestein, F. W. 42 



Nouy, L. du 26 



nucleic acid, nucleoprotein 162-6 



Odell, T. T. 172 

 Olsen, E. 26 

 Orla-Jensen, S. 26 

 Owen, R. D. 150, 176 



paedomorphosis 12-13 

 Palmer, J. F. 29 

 Paramecium 100-4 

 Park, O. 22 

 Park, T. 22 

 Parkes, A. S. 30 

 Pauling, L. 126 

 Pearl, R. 28, 30 

 Pearson, K. 25, 35 

 penicillin. See Antibiotics 

 Penrose, L. S. 44, 67 

 Pierson, B. F. 28 

 placenta. See Foetus 

 polymorphism 89, 125-7 

 Popper, K. 16 

 Poulton, E. B. 17 



189 



