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By Tom Tolman, Richard Lewington

This butterfly consultant covers 444 species, with each one species totally illustrated with work of the male, girl and all significant kinds, types and sub-species. The textual content covers all taxonomic nomenclature, distribution, flight interval, edition, habitat and behavior.

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Moscow, 14, 435. FRANKLAND, H. M. T. (1955). J . , . 46,180. HALDANE, J. B. S. (1949). Ann. hum. , 14, 288. IRWIN, J. (1949). J . Hyg. ),47, 188. ISUPOV, A. (1949). , No. 4,29. K A D I ~M. , (1949). Jugosl. vet. , 2, 602. MCFADYEAN,J. (1933). J . comp. , 46, 186. (1935). 2. Gestiitk. , 30, 127, 165. MINER,R. W. ). (1954). Ann. N . Y . Acad. , 57, 451. MURIE, A. (1944). The Wolves of Mt. McKinley. Washington: US. Dept. Int. Nat. Parks Service. PONOMAREVA, L. , and SPITSKAYA, T. D. (1953). , No.

Reproduced by courtesy of the Editor, Jounzal of Uerontologu. Correlation between lifespans of parents and offspring Since age of death depends in part upon heritable factors there should be a measurable difference in longevity between the foals of long-lived and short-lived parents, though Beeton and Pearson’s (1901) results in man suggest that it would not be large. All the mares in sample A were scored for the longevity of their dam, and as many as possible for the longevity of their sire; the date of death could be ascertained only for stallions appearing in the obituary lists, or rather less than half A.

168 Dam died < 13 58 Progeny of Hemtit, Galopin and Hampton Dam reached 24 yrs. 100 Dam died < 18 yrs. 58 * Stallions whose date of death appears in the o h i t w y lists* mares by Hermit Qalopin and Hampton are excluded from thie figure, hut included in the ll&e for dam and sirk 5 23 years. these cases were fixed to secure enough lives for the calculation; the relative contribution of short-lived mares to the sample was so small that it was not possible to prepare a table for the survival of their fillies by short-lived stallions.

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