BY FRITZ NOETLINt;, M.A., PH. J). 57 



Tliis table presents some striking features ; 56 tero- 

 watta (74.6 per cent.) weigh under eight ounces ; only 19 

 (25.2 per cent.) are above that weight, and even in that 

 small number there are included specimens which, strictly 

 speaking, should not have been mentioned. However 

 that may be, these figures prove conclusively that the tero- 

 watta was an implement of light weight, and as such it 

 was not particulai'ly suitable for any heavy work This 

 view is still more emphasised if we consider that 44 speci- 

 mens (58.6 per cent.), that is to say, considerably over one- 

 half, weigh under 4 ounces. 



The above figures make it appear that the largest 

 number, viz-, 24, equal to 32 per cent., weigh from 2 to 4 

 ounces, the lighter, but particularly the heavier weights, 

 declining rapidly in number- Now, if we assume that the 

 most suitable weight was from 2 to 8 ounces, we have: — 



(a) 2 ounces and under : 20 specimens, equal to 26.6 

 per cent. 



(b) 2 ounces to 8 ounces : 36 specimens, equal to 48.0 

 per cent. 



(c) More than 8 ounces : 19 specimens, equal to^ 25.2 

 per cent. 



The proportion of these three classes is rather remark- 

 able, as we have : — 



a : b : c equal to 1 : 2 : 1. 



And I do not think that it is purel}^ accidental. As I 

 Btated above, I selected the specimens at random, and if 

 we find the examination of 75 specimens proves that out of 

 4 tero-watta 2 weigh between 2 and S ounces, while one is 

 above and one below that weight, we must conclude that 

 this really represents the true proportion. 



B.— SIZE. 



The largest specimen I found measures 206 mm. in 

 length, while the smallest measures not more than 24 mm. 

 Specimens measuring over 100 mm. (4-inch) represent only 

 30.6 per cent., while 69.4 per cent, remain under that size. 

 Onlv 6 specimens that are under 100 mm. in length weigh 

 more than 4 ounces, but none of them weigh more than 

 7 ounces. We have, therefore: — 



Length more than 100 mm. : 22 specimens, equal to 

 30.6 per cent-, weighing all more than 4 ounces- 



