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bought several very fine pairs of horns from the Arabs. But the finest pair that I saw 
was at Meduin (Military headquarters, Tunisian Sahara) in the house of the Com- 
mandant. He allowed me to measure and draw it (see the sketch, fig. 95). You will 
notice that this example has a third twist ; the majority of male Addaxes only attain to 
two or two and a half, though I have a pair in my collection here which verges on the 
third turn. 
“The cow Addax (see the drawing, fig. 96) has much slenderer and much less 
spiral horns, which have departed far less markedly from the Orygine type.” 
Fig. 95. Fig. 96. 
Fig. 95.—Horns of male Addax, 323 inches along the curve. (From a pair in 
the possession of.Major Pichot, at Meduin.) 
Fig. 96.—Horns of female Addax, 31 inches in length along the curve. (From 
a pair in Sir Harry Johnston’s collection.) 
Another excellent authority on the Mammals of Tunisia, Mr. Joseph S. 
Whitaker, F.Z.S., has most kindly placed at our disposal the following results 
of his observations on this Antelope :-— 
“The Addax, which is called by the Tunisian Arabs Bakrah-el-Ouasch, or Wild Cow, 
is still to be found in the inland desert-country of the south of the Regency, although 
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