ARCHAEOLOGICAL DISCOVERY
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found. The explanation for this is that this part of South China has been rising relative to sea level. This positive rise is connected with isostasy and eustatic movements of the oceans that cause cycles of submergence and emergence. Assuming a rise of one foot every hundred years then, Hong Kong in the last 2,500 years has risen 25 feet,
Dr. Heanley and his friend Mr. Walter Schofield, a government administrator, gathered a large and varied collection of celts from Kowloon, Cheung Chau and Lantau Island. Examination of this collection by experts soon established that they were not just freaks of nature but definite human artifacts. Since Heanley's first notification, other workers have found them in practically every part of the Colony, and contrary to his belief that they were principally found on granite hills, they have been found often in abundance on every other rock outcrop represented in the area — especially volcanic rock. It may be that because of the extreme susceptibility of granite to erosion, which causes 'badland country' with thin or no vegetation cover, the celts can be seen more easily,
Including the places mentioned by Dr. Heanley, celts can still be found in the fields, on raised beaches or on low hills at Tai Wan, Hung Shing Ye, Yung Shu Wan, Aberdeen, Tai Po, Castle Peak, San Hui, So Kun Wat, Tsun Wan, Shatin, Shataukok, Man Kok Tsui, Ha Tsuen, Sheung Shui, Shek Pik, Sai Kung, Lai Chi Chung, Sok Ku Wan, Fanling and Kau Sai Chau.
Much is owed to Dr. Heanley, Mr. Schofield and Professor J. L. Shellshear, who was head of the Anatomy Department in the University of Hong Kong, for their conscientious and patient work in combing the Colony for other archaeological remains and sites after the celts had been identified. I have been told by our Vice-President, Sir Lindsay Ride, who knew all three intimately and often accompanied them on their field trips, that they were superbly energetic and covered tremendous distances in a day at great speed. Only fit and enthusiastic walkers could hope to last a whole day with them. They located several prehistoric sites, the most notable being So Kun Wat, Shek Pik and those at the northwest end of Lamma Island.