Changing incidence of trachoma in the West Midlands

An increasing incidence of trachoma in an urban Midland population has been shown to be mainly due to immigration of infected carriers from the Punjab. In areas where trachoma is common special clinics should be established for the treatment and follow-up of patients and contacts. Public health measures should be introduced to prevent the spread of the infection. Laboratory methods should be more widely used in the diagnosis and control of trachoma.

Obsidian Hydration Rate for the Klamath Basin of California and Oregon

A hydration rate for obsidian of 3.5(4) microns squared per 1000 radio-carbon years has been established at the Nightfire Island archeological site in northern California and provides a means to date other prehistoric Klamath Basin sites. The new rate follows the form of the hydration equation formulated by Friedman and helps to refute claims made for other hydration equations.