Osborn, Henry Fairfield, 1857-1935 (curator, American Museum of Natural History, New York)

Osborn writes that he will shortly send Ewart a revision of the Equidae, which he calls 'a dry, exhausting piece of work, which is, however, absolutely essential for the more interesting monograph which I trust will follow one day.' He reports that the Celtic pony is now in full coat and is not typical. As it lacks many of the specific characters on which Ewart established the subspecies, he requests again the skeleton and skin of the type.

Osborn writes that he is still working on developing the horse collection at the Museum and preparing his memoir on the Evolution of the Horse. He hears from Director Hornaday that the Scandinavian and Celtic ponies will have to be disposed of as they are eating too much. He once again requests the skeleton and skin of the original Celtic pony to be sent to him.

Osborn states that the pony has arrived safely in New York. He will have the animal photographed for Ewart soon. He mentions not having read the papers by Mendel and Bateson. He announces that he will be writing to the Duke of Bedford to say that he would be interested in receiving the skeleton of one of his Russian horses if one should die. He also states that James Gidley is revising the species of their miocene, and he criticises Othniel Charles Marsh's phylogeny.

Osborn, writing from the American Museum of Natural History, expresses interest in Ewart's work on telegony and the embryology of the horse. He mentions that he is also sending Ewart papers about the ancestral history of the horse.

Osborn writes regarding the Shetland stallion that he had asked Ewart to purchase for him. He requests that the stallion be shipped from Glasgow to New York with Anchor Line and requests that if the pony should die en route, that his body be preserved. He also provides details of his striped dun which is being shipped East.

Osborn thanks Ewart for the 'Multiple Origin of Horses and Ponies', stating that it will be useful to him on his forthcoming trip to Europe, where he hopes to meet Ewart.

Osborn thanks Ewart for his visit to Penicuik and asks him for some glass slides and photographs. He recommends that when Ewart visits the British Museum again he studies the hoofs of Onohippidium as they resemble a zebra more than an ass or horse. He asks Ewart to procure him a hoof of an ass or Przewalski's horse if he is able.

Osborn writes regarding the safe arrival of his Shetland pony in New York for an exhibition. Dr Matthew is sending Ewart casts of horses' feet for his examination. He also reports the safe arrival of his striped dun.