By KenNETH W. Millican, B.A., Cantab., M.R. C.S., London: H. K. Lewis, 1883, pp. 107. This essay is a bold application of the Darwinian hypothesis to explain certain anomalous forms and combinations of disease and disputed points relating to the specificity of disease. The general idea is not altogether a novel one, but Mr. Millican develops it more fully than has yet been done, and attempts to...

Garside families have recently emerged as a relevant context for extending results involving Garside monoids and groups, which themselves extend the classical theory of (generalized) braid groups. Here we establish various characterizations of Garside families, that is, equivalently, various criteria for establishing the existence of normal decompositions of a certain type. In 1969, F.A.Garside...

In contrast to mammals, most reptiles constantly regenerate their teeth. In the snake, the epithelial dental lamina ends in a successional lamina, which proliferates and elongates forming multiple tooth generations, all linked by a permanent dental lamina. To investigate the mechanisms used to control the initiation of new tooth germs in an ordered sequential pattern we utilized the polyphodont...

BRUCELLOSIS, an insidious disease commonly referred to as contagious abortion or Bang's disease, has caused heavy losses to the cattle industry every year, largely through reduced milk production, the OSS of calves by premature birth, and sterility* Brucellosis may spread very rapidly in a susceptible herd, many of the animals contracting thé disease within.a few weeks after they are exposed to...