IN a recently published number of the Quarterly Journal of Microscopical Science, Mr. Leslie Harvey, of the department of zoology of the Imperial College of Science, London, has given an account of ...
THE letters by Mr. L. A. Harvey and Prof. V. Nath in NATURE of November 27 and December 4 require comment. With regard to Parat's ‘Vacuome Theory’, I have little of value to say. Some of my associates ...