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66
Journal of the Lepidopterists' Society
OBITUARY
PERCY HEATH HOBART GRAY
1891-1971
It is with deep regret that we record the death on October 11th, 1971, of Dr. P. H. H. Gray, a Charter Member of the Lepidopterists' Society, and for some years a member of the Entomological Society of Canada and the Entomological Society of Quebec.
He was bom in Woodland Heights (Richmond), Virginia, on November 21st, 1891, and studied in England at Oxford, (M.A.) and London University (D.Sc). In 1920 he joined the staff of the Bacteriology Department, Rothamsted Experimental Station, England, and in 1929 became Professor and Chairman of the Department of Agricultural Bacteriology, Macdonald College of McGill University, Ste. Anne de Bellevue, P.Q., Canada. During the course of almost 30 years prior to his retirement in 1957, his research output was considerable, concerning mainly the activities of soil microorganisms towards cellulose, urea and pesticides and a great many scientific papers were published in this connection. For many years Dr. Gray guided numerous students v/ho trained in microbiology and who now hold important positions across Canada.
During this period, Dr. Gray found time for and took a great interest in entomology, developing a good local collection of Lepidoptera, collected for the most part in his garden at Baie d'Urfe, P.Q., and in the surrounding woods and fields. His careful collecting produced several species not previously recorded for the Province of Quebec. He published some 25 papers on Lepidoptera. He was also a proficient classical scholar, and his quiet wit was at its best in many verses which he composed and in his letters to friends.
Shortly after retiring he moved to Nova Scotia, purchasing a home outside Digby, where he resided and continued with his interest in entomology until the time of his death. Our deepest sympathy is extended to his wife and son.
BIBLIOGRAPHY (ENTOMOLOGICAL) OF P. H. H. GRAY
1949. Alfred Russell Wallace on butterfly hunting. Lep. News 3: 80.
1949. An economical storage box. Lep. News 3: 104.
1951. An apparatus for incubating lepidopterous larvae or pupae in nutrition and
environment tests. Lep. News 5: 35. 1951. Results of humidity tests with Papilio pupae. Lep. News 5: 67.
1951. A multiple reflector light trap. Lep. News 5: 72.
1952. The weights of fresh and dried butterflies. Lep. News 8: 73.
1953. A note on the colors of pupae of Pieris rapae developed under artificial conditions. Lep. News 7: 5.
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1953. Correlations between "pupal volume" and wing radius and weight in butterflies. Lep. News 7: 48.
1953. Aids to distinguish between females of the "Winter-Moths", Alsophila pometaria and Operophtera bruceata (Geometridae). Lep. News 7: 127.
1954. Effects of humidity during growth of Pieris rapae larvae. Lep. News 8: 88. 1954. 1952 captures in Quebec. Lep. News 8: 102.
1954. Notes on the occurrence of Alsophila pometaria (Geometridae) at Baie d'Urfe and Macdonald College, Quebec, in 1953. Lep. News 8: 140.
1954. Aristotle's description of the life history of a butterfly. (Psyche) Lep. News 8: 145.
1955. An apparatus for weighing small insects. Lep. News 9: 58.
1955. Aphomia gularis (Zeller) (Lepidoptera: Pyralidae) at Baie d'Urfe, Quebec.
Can. Ent. 87: 239. 1955. An apparatus for the rapid sorting of small insects. The Entomologist 88:
1103. 1957. Mold-free relaxing bottles for Lepidoptera. Lep. News 11: 54.
1959. Dwarf Pierine butterflies. The Entomologist 92: 1154.
1960. A method for estimating the wing radius in Lepidoptera. Lep. News 14: 63.
1960. Dwarf Pierine butterflies: a supplementary note. The Entomologist 93: 180.
1961. A comparison of scales on wings of Colias species: (Lepidoptera: Pieridae). The Entomologist 94: 125.
1962. 'Giant' scales on the wings of Thecla species (Lepidoptera: Lycaenidae). The Entomologist 95: 76.
1965. A method of estimating the area of a butterfly's wing. The Entomologist 98: 64.
1967. Correlations between characters in species of Colias (Lepidoptera: Pieridae). The Entomologist 100: 62.
1968. Noviculoid scales in the fore wing terminal borders of Colias species: (Lepidoptera: Pieridae). The Entomologist 101: 175.
A. C. Sheppard, Lyman Entomological Museum, Macdonald Campus of McGill University, Ste. Anne de Bellevue 800, P.Q., Canada.