In page 69 of your issue of 3d of February, 1883, I notice among the "Challenger Notes" of Professor Mosely the statement that "Among stockmen, and even some well educated people in Australia, there is a conviction that the young kangaroo grows out as a sort of bud on the teat of the mother within the pouch." Some eighteen months ago I noticed a paragraph wherein some learned professor was reported to have set at rest the contested point as to whether the kangaroo come into being in the same manner as the calves of the cow and other mammals, or whether the young grows, as alleged, upon the teat of its dam within the pouch. The learned professor in question asserted that it did not so grow upon the teat; but, with all due respect to the professor's claim to credibility on other matters, I must in this instance take the liberty of stating that he is in error. The young kangaroo actually oozes out, if I may use such an expression, from the teat. Strange as the statement may seem, it is a fact that the first indication of life on the part of the kangaroo offspring is a very slight eruption, in size not larger than an ordinary pin head. This growth gradually resolves itself into the form of the marsupial, and is not detached until close upon the expiring of of the fourth month. It is carried by the mother during that period, and thenceforth exists partially at least on herbage. Indeed, from the fourth till the seventh month it is almost constantly in the pouch, only coming out occasionally toward the close of evening to crop the grass. I had at one time in my possession a specimen of the kangaroo germ which I cut from off the teat, complete in form, whose entire weight was less than an ounce; and, at the same time, I had a kangaroo in my possession which measured seven feet six inches from the top of the ears to the extremity of the tail. Your readers would doubtless feel interested with a few particulars as to my life among the kangaroos in a genuine kangaroo country. I have read somewhere about the exceeding beauty of the eyes of the gazelle; how noted hunters have alleged that their nature so softened on looking into the animal's eyes that they (the hunters) had no heart to destroy the creature. Now, I have never seen a gazelle, and so cannot indulge in comparisons; but if their eyes are more beautiful than those of a middle-aged kangaroo, they may indeed be all that huntsmen say of them. With respect to the old kangaroos, their eyes and face are simply atrocious in their repulsive ugliness.