Jerboa.
London Published Decr. 1.st 1789. by G. Robinson & Co.
JERBOA.
I have already observed that the Arabs have confounded the Saphan with several other animals that have no sort of resemblance to it; there are two of these very remarkable, the Fennec and Jerboa, of which I am now to treat. As I have given excellent figures of both, by drawings taken from the creatures alive, I have no doubt I shall prevent any confusion for the future, and throw some light upon sacred scripture, the greatest profit and use that can result from this sort of writing.
If the rabbit has been frequently confounded with the saphan, and stood for it in the interpretation of the Hebrew text, the same has likewise happened to another animal, the Jerboa, still more dissimilar in form and in manners from the saphan, than even the rabbit itself, and much less known. The Jerboa is a small harmless animal of the desert, nearly the size of a common rat: the skin very smooth and shining, of a brown tinged with yellow or gold colour, and the ends of the hairs tipt with black. It lives in the smoothest plains or places of the desert, especially where the soil is fixed gravel, for in that chiefly it burrows, dividing its hole below into many mansions. It seems to be apprehensive of the falling in of the ground; it therefore generally digs its hole under the root of some spurge, thyme, or absinthium, upon whose root it seems to depend for its roof not falling in and burying it in the ruins of its subterraneous habitation. It seems to delight most in those places that are haunted by the cerastes, or horned viper. Nature has certainly imposed this dangerous neighbourhood upon the one for the good and advantage of the other, and that of mankind in general. Of the many trials I made, I never found a Jerboa in the body of a viper, excepting once in that of a female big with young, and the Jerboa itself was then nearly consumed.
The Jerboa, for the most part, stands upon his hind-legs; he rests himself by sitting backwards sometimes, and I have seen him, though rarely, as it were lie upon all four; whether that is from fatigue or sickness, or whether it is a natural posture, I know not. The Jerboa of the Cyrenaicum is six inches and a quarter in length, as he stands in the drawing. He would be full half an inch more if he was laid straight at his length immediately after death. The head, from his nose to the occiput, is one inch two lines. From the nose to the foremost angle of the eye, six lines. The opening of the eye itself is two lines and a quarter; his ears three quarters of an inch in length, and a quarter of an inch in breadth; they are smooth, and have no hair within, and but very little without; of an equal breadth from bottom to top, do not diminish to a point, but are rounded there. The buttocks are marked with a semicircle of black, which parts from the root of the tail, and ends at the top of the thigh. This gives it the air of a compound animal, a rat with bird’s legs, to which the flying posture still adds resemblance. From this stroke to the center of the eye is three inches, and to the point of his toe the same measure; his tail is six inches and a quarter long, seems aukwardly set on, as stuck between his buttocks, without any connection with his spine; half of it is poorly covered with hair of a light or whiter colour than his body; the other half is a beautiful feather of long hair, the middle white, the edges jet black: this tail, which by its length would seem an incumbrance to him, is of a surprising advantage in guiding and directing him in his jumping.
From the shoulder to the elbow of the fore-foot is half an inch: from the elbow to the joining of the paw, 5/8ths of an inch. The claw itself is curved, and is something less than a quarter of an inch. It has very long mustachoes, some of them standing backward, and some of them forward from his nose; they are all of unequal lengths, the longest an inch and a half; his belly is white: he seems to be of a very cleanly nature, his hair always in great order. From his snout to the back part of the opening of the mouth is half an inch; his nose projects beyond his under jaw three quarters of an inch. He has four toes in his hind-foot, and a small one behind his heel, where is a tuft of hair coloured black. The fore-foot hath three toes only.
The ancients have early described this animal; we see him in some of the first medals of the Cyrenaicum, sitting under an umbellated plant, supposed to be the silphium, whose figure is preserved to us on the silver medals of Cyrene. The high price set upon it is mentioned by several historians, but the reason of that value, or the use of the plant, I have never yet been able to comprehend. I suppose it was an adventitious plant, which the curiosity and correspondence of the princes of that state had probably brought from some part of Negroland, where the goats are brousing upon it at this day with indifference enough, unconscious of the price it bore in the time of the Ptolemies.
Herodotus[50], Theophrastus[51], and Aristotle[52], all mention this animal under the name of διπους, γαλαι διποδες or, two-footed rats. This animal is found in most of the parts of Arabia and Syria, in every part of the southern deserts of Africa, but no where so frequently, and in such numbers, as in the Cyrenaicum, or Pentapolis. In my unfortunate journey there, I employed the Arabs, together with my servants, to kill a number with sticks, so as that the skins might not be injured by shot. I got them dressed in Syria and in Greece, and sewed together, making use of the tail as in ermine for the lining of a cloak, and they had a very good effect; the longer they wore, the glossier and finer appearance the skins made. The Jerboa is very fat and well-coloured; the buttocks, thighs, and part of the back, are roasted and ate by the Arabs. I have eaten them; they are not distinguishable from a young rabbit either in colour or taste; they have not even the strong taste the rabbit has. Some writers have confounded these two animals together; at least they have mistaken this for the saphan, and the saphan for the rabbit. This, however, is plainly without foundation. These long legs, and the necessity of leaping, demand the plain ground, where nature has always placed this creature.