In 1968 the average salary of men teachers in maintained schools in England and Wales was Â£1,646. I estimate that the last two pay settlements have raised this figure to about Â£1,880. The comparable figure at 31st March, 1963, was Â£1,244.
Two main tectonic structures are spreading centers and subduction zones. Spreading centers occur at the boundary between two plates that are moving apart, called divergent plate boundaries. Here the plate motion opens a gap between the plates and magma from the mantle rises up through it.
spread plate method A plate count method in which inoculum is spread over the surface of a solid culture medium. For the term spread plate method may also exist other definitions and meanings, the meaning and definition indicated above are indicative not be used for medical and legal or special purposes. Source : http://microcell.ifas.ufl.edu/biogator/SUMMER%20'05/SU02-Glossary%20of%20Microbiology.doc.