HENBUEY METEORITE CRATERS ALDERMAN 233 



(3) That if the position of a mass of iron be located by geophysical 

 means, boring operations could then be proceeded with advan- 

 tageously. Boring or drilling would certainly be of great value in 

 prospecting the main craters. In some of the smaller ones it is 

 possible that the meteoric material might be revealed by actual 

 digging. 



These notes are merely the record of a preliminary survey and the 

 author believes that work along the lines suggested will lead to 

 results which will be of interest to the world in general and particu- 

 larly to the world of science. 



Acknowledgments. — The author wishes to record his sincere 

 thanks to the authorities of the South Australian Museum for pro- 

 viding the opportunity for him to visit Henbury ; to Profs. Sir Doug- 

 las Mawson and Kerr Grant for their enthusiastic support and ad- 

 vice ; and to Mr. F. L. Winzor for his invaluable help and company 

 during the stay at the meteorite locality. 



ADDENDUM BY L. J. SPENCER 



After reading the typescript of Mr. Alderman's most interesting 

 paper, I was rather surprised to find that the meteorite craters he 

 describes are marked on The Times Atlas (London, 1922, pi. 105). 

 Between Henbury and Bacons Range they are indicated as a small 

 round hill in exactly the position shown on Mr. Alderman's sketch 

 map (fig. 1). The latitude and longitude of the spot are 24° 34' S., 

 133° 10' E. This is about 50 miles south of the MacDonnell Eanges 

 in the very center of Australia. After Mr. Alderman's visit to the 

 locality in May, 1931, a visit was made in June by the brothers R. 

 and W. Bedford and Mr. B. Duggin, from the Kyancutta Museum 

 at Kyancutta, South Australia, which involved a journey by motor 

 truck of about 3,000 miles. Of the material then collected Mr. R. 

 Bedford has sent to the British Museum a large series of 542 com- 

 plete pieces of the meteoric iron ranging in weight from 3.4 grams 

 to 17014 i^ounds (771/^ kg). There are large pieces weighing 11,445 

 and 6,550 grams and several of about 2 kg, but the majority are 

 small shelly and jagged pieces. The total weight of the 542 pieces 

 is 321 pounds (146 kg). In addition, about 20 i^onnds of "iron 

 shale " and fused rock fragments were sent ; also excellent sketches 

 and photographs made by Mr. R. Bedford of the craters. The Ade- 

 laide party collected 800 pieces of the iron, and the Kyancutta party 

 550. 



It is quite evident that at these craters there was a large shower 

 of many separate masses of meteoric iron. But the presence also of 

 the laminated " iron shale " in pieces up to several pounds in weight 

 (the largest piece sent by Mr. R. Bedford weighs 1,668 grams) and 



