Particulates in engine oil can abrade moving parts.

There is no necessity for regarding some eyes as »exochromic«, and others as »autochromic«, since there is no evidence to show that pigmented mesoderm cells have forced their way through the basal membrane into the eye;

If you need help, please contact a member of the crew.

Not all stand types have an alderwood equivalent. For example, Quercus petraea and Fagus rarely grow with alder, so the alderwood equivalents of stand types 6A and 6C are the same as those of 6B and 6D, and there are no alderwood equivalents of been woodland.