having first submitted them to the supervision of Thompson as to dates, &c. I am glad to tell you that he 
reports them generally correct, though you will see I had made slight confusion, as I never purchased any 
of the Leucoryx but the pair I have now, of which we consider the male as not above four years, while 
the female is perhaps ten or eleven. What I bought of Wombvvell was an Addax. As to Reboulet's ani- 
mals, Thompson's first agreement with him was, to purchase the three Antelopes without the Giraffes (with 
which I throughout the whole business steadily refused to meddle, though Reboulet made many appeals to 
me to take them also), at the price of £100 for the three; but to this I was afterwards obliged, when I 
bought them of Herring, to add £10 or £20 more, I forget which exactly. Let me know if any other 
point occurs to you as desirable to be noted which I may have omitted." 
" The young Addaw is so unlike an Antelope ! 
" I have not been able to see my young things yet, on account of the weather, and am anxious to see 
the Addax, which I fear begins already to show signs of change in his coat. Hawkins has commenced a 
drawing of this set, papa, mamma and son. 
" I am sure you will be glad to know that we have a young Addax. It was born about two days since, 
and is, I am sorry to say, a male, but is very strong and promising. I forgot to say, the young Addax 
is quite unlike the adult, is very strong made, with large head, and all over of a red sand colour, except 
on the chest, where there seems a darker, brownish spot. I think it would be worth while securing its 
representation in its present state for comparison. 
" The young Addax has as yet no change in his horns, but it is early day. His mother is beginning to 
show large again ; indeed, she is to calve about Christmas : not the best time you will say, but we could 
not well manage it otherwise. My Addax goes on charmingly, and the young one thrives regularly. My 
Addax has taken the male, and we hope is with young. This time it must be a female." 
" I found most of John's family going on prosperously here, and on Wednesday paid a visit to Master 
Addax, who is growing a very fine fellow, and his horns are now about 5 inches long."- — May 1845. 
" By the way, my young Addax\ horns have as yet very little altered, and the horns of his parent differ 
very much from each other. The young one's have begun to recline a little, but in no degree to assume 
the corkscrew of the parent. They are still very straight, though not so erect. 
"John has just brought me the bad news that the female Addax last night: she had a well- 
grown and promising young male in the inside. He saw she was not right yesterday ; her eyes dull and 
her coat staring rough ; but she fed well, though it did her no good. The medicine he gave her answered 
well, but seems to have been too late. On examining, her stomach appears to be extensively disordered, 
with some, but not much, inflammation, and some small rupture of the stomach, which, if I understand him 
aright, seemed not to be recent ; but the whole inside was full of water bladders iif^great quantities. What 
say you ? Will these, as they are, be of any use to the British Museum ? Thompson has not consulted your 
list, but will let me know in the morning, and if so it will be forwarded at once. It is better for me that 
the young was not a female." — Jan. 18, 1846. 
" By the way, have you noticed the horns of the female Addax ? They struck us here as growing very 
differently from the male. 
" The reason I called your attention to the horns of the Addax was, as so much stress is generally laid 
on the variations of the curvation in the Antelopine horns ; and yet, here are two sexes of the same species 
certainly very much varying from each other, though sufficiently alike in general resemblance. 
" I have inserted the Addax in the list, but females only, as I have now here two males. 
" I send you at the same time a fresh drawing of the young male Addax, which is now nearly, if not 
quite, a twelvemonth old, and you will observe has not yet assumed the parental flexure. Does not this 
somewhat invalidate the strength of this feature as a distinctive character between the species ? It seemed 
to me a fact well worth being established and recorded, and therefore I determined to have this additional 
drawing taken." — April 16, 1846, 
H 
