During the twelve years 1857-68, I have found recorded in the books of the Poor-law Medical Staff and of various medical institutions in Islington to which I have access, 3,850 cases of scarlatina. These twelve years include three epidemics, namely, those of 1859, 1863, and 1867-8; three years intervening between 1859 and 1863, and three years again between 1863 and 1867. Sex and Age in their R...

‘‘The whole organism is so tied together that when slight variations in one part occur, and are accumulated through natural selection, other parts become modified. This is a very important subject, most imperfectly understood.’’ (Darwin, 1859, The Origin of Species). ‘‘Hence if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly modify unintentionally other par...

Reseña del libro:
 Sergio Hernández Roura, Edgar Allan Poe y la literatura fantástica mexicana (1859-1922), México, Bonilla Artigas Editores, 2020.

We surveyed the stapedial anatomy of Thrinaxodon liorhinus Seeley, 1894 and Galesaurus planiceps Owen, 1859, two iconic Early Triassic basal cynodonts. The complete characterization this bone analysis its morphological variability along ontogeny within each taxon were possible through study eleven elements nine 1859. Our results highlight notable qualitative quantitative differences among speci...