40 SCIENCE PROGRESS 



in certain points, notably in the limb-bones, the relationship 

 between the two types may nevertheless be close. 



The same number of the Journal contains an interesting 

 article on " palaeolithic " implements in South Africa by 

 Neville Jones, entitled " On the Implement-bearing Deposits 

 of Taungs and Tiger Kloof in the Cape Province of South 

 Africa." There is also a most important article by Mrs. 

 Scoresby Routledge on Easter Island, under the title " Survey 

 of the Village and Carved Rocks of Orongo, Easter Island, by 

 the Mana Expedition." A magnificent series of photographs 

 is appended to this latter article. 



The reader may remember that in my last article in this 

 series I dealt at length with Mr. Reid Moir's correlation of 

 East Anglian Pleistocene beds with Prof. Penck's glacial and 

 interglacial scheme, and indicated that I had not been able to 

 understand what English stratum Mr. Moir had intended to 

 correlate with Penck's Giinz. I understand from Mr. Moir 

 that at present he cannot arrive at a definite conclusion on 

 this point. Owing to a slip in the proof — which was, however, 

 obvious from the context — I stated that Mr. Moir correlated 

 the Cromer Till with the Riss, whereas, in fact, he correlates 

 this stratum, of course, with the Mindel. 



The following articles may also be mentioned : 



On Physical Anthropology. In the American Journal of Physical An- 

 thropology, vol. iii, No. 3, " Age Changes in the Pubic Bones," by T. W. 

 Todd ; and " Abnormalities and Pathology of Ancient Egyptian Teeth," by 

 Sir A. Ruflfer. 



And on Social Anthropology. In the Journal of the Royal Anthropological 

 Institute, vol. 50, pt. 2, "Migrations of Cultures in British New Guinea," by 

 A. C. Haddon ; " The Nilotic Languages," by G. W. Murray ; and " Notes 

 on Edo Burial Customs," by N. W. Thomas. And in recent numbers of 

 Man : " History and Ethnology in Central Asia," by M. A. Czaplicta (Feb.) ; 

 and " On a Recent Discovery of Rock-sculptures in Derbyshire," by G. A. 

 Garfitt (March). And in Annals of Archceology and Anthropology, vol. viii, 

 No. I, " Oxford Excavations in Nubia," by F. L. Griffiths. 



MEDICINE. By R. M. Wilson, M.B„ Ch.B. 



The Future of Radiology. — The most important medical event 

 of the past quarter has undoubtedly been the death of Dr. 

 Ironside Bruce, radiologist to Charing Cross Hospital. Dr. 

 Bruce died of aplastic pernicious anaemia, which was induced 

 by the action of penetrating X-rays on the bone marrow. 

 Apart from its tragic character, his end calls attention to a 

 danger in the use of those rays which has not perhaps been 

 sufficiently realised. 



Modern X-ray work is being carried on to a great extent with 

 tubes capable of affording a penetrating ray. This ray does 

 not tend to burn the skin or to set up dermatitis. The skin, 



