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Maximum breadth of hips. — Measure with sliding scale (glissi&re 

 anthropomitrique) the maximum breadth from the external surfaces 

 of the spines of the ilia (cretes iliaques in Topinard's plate 212). 



General. — In reading all the instruments fractions of a millimeter 

 should be disregarded, and the nearest whole figure taken. In 

 practice it rarely happens that the indicator exactly divides a 

 millimeter. 



Minute accuracy in measuring is the one essential point. Inaccu- 

 rate measurements are not merely worthless and misleading in 

 themselves, but will throw out the averages of the whole set of 

 figures concerned. If therefore a doubt arises as to the accuracy of 

 any particular dimension, the measurement should be repeated. If 

 after several trials the results still vary, an average should be struck, 

 and that average entered in the form." 



All the instruments should be carefully oiled after use with crude 

 Rangoon oil or vaseline. 



A specimen of the hair of each caste or tribe measured should 

 be sent up for examination. It should be about 2 inches long 

 and cut from the middle of the head, tied round with tape, ticketed 

 with the name of the caste or tribe securely fastened to the tape, 

 and placed in an envelope with the name of the caste legibly 

 written on it in Roman character. 



Darjeeling, H. H. RISLEY. 



The 20th September 1886. 



