It is remarkable that it should persist in the spectacled bear of the Andes, although it has disappeared in all other living members of the group. The third trochanter of the femur, on the other hand, can scarcely be regarded as primitive, seeing that it is absent in several of the lower groups of mammals.
Robertson has shown that the typhoid bacillus can grow very easily in certain soils, can persist in soils through the winter months, and when the soil is artificially fed, as may be done by a leaky drain or by access of filthy water from the surface, the microorganism will take on a fresh growth in the warm season.
Many authors who have devoted special attention to questions of nomenclature therefore think Reptilia and Batrachia the correct names of the two great classes into which the Linnaean Amphibia have been divided, and consider that the latter term should be reserved for the use of those who, like that great authority, the late Professor Peters, down to the time of his death in 1883, would persist in regarding reptiles and batrachians as mere sub-classes (1).
And about this harpooneer, whom I have not yet seen, you persist in telling me the most mystifying and exasperating stories tending to beget in me an uncomfortable feeling towards the man whom you design for my bedfellow--a sort of connexion, landlord, which is an intimate and confidential one in the highest degree.
These crystals are extremely resistant to absorption, are found in old blood clots, and have been known to persist in old cerebral haemorrhages after many years.
Molar teeth of the simple tritubercular type persist in the golden moles (Chrysochloris) among the Insectivora and also in the marsupial mole (Notoryctes) among the marsupials.
The nuclei of the original cells persist in the protoplasmic membrane.
An incident which happened immediately after these events greatly encouraged the Boers to persist in their opposition to Great Britain.
If sporangia and spores are present they also may persist in a perfectly recognizable form, and in fact much of our knowledge of the fructification of fossil Ferns and similar plants has been derived from specimens of this kind.
And even amongst the adherents of the left-hand mode of worship, many of these are said to follow it as a matter of family tradition rather than of religious conviction, and to practise it in a sober and temperate manner; whilst only an extreme section - the so-called Kaulas or Kulinas, who appeal to a spurious Upanishad, the Kaulopanishad, as the divine authority of their tenets - persist in carrying on the mystic and licentious rites taught in many of the Tantras.