2 8 THOMAS HENRY HUXLEY 



2. "On the Common Plan of Animal Forms " (Abstract 

 of a Friday Evening Discourse delivered at the Royal 

 Institution on May 12, 1854. Proc. Roy. Inst., i, 1851-4, 

 pp. 444-6. Sci. Mem., i, xxv, p. 281). — After demon- 

 strating that Vertebrates, Annulosa, and Molluscs present 

 variations on three common plans of structure (the same 

 being also true for other great groups), the question is 

 raised as to the nature of the relations, if any, between 

 such plans, the conclusion being that they are specializa- 

 tions of a more fundamental type, as indicated by the 

 facts of embryology. Written in pre-Darwinian days the 

 discourse is distinguished by what we should now call an 

 evolutionary tone, implied rather than expressed. 



g. " On the Structure and Relation of the Corpuscula 

 Tactus (Tactile Corpuscles or Axile Corpuscles) and of 

 the Pacinian Bodies" (Q. J. Micros. Soc, ii, 1854, 

 pp. 1-7. Sci. Mem., i, xxvi, p. 284). 



4. " On the Ultimate Structure and Relations of the 

 Malpighian Bodies of the Spleen and of the Tonsillar 

 Follicles" (op. cit., ii, 1854, pp. 74-82. Sci. Mem., i, 

 xxvii, p. 291). — This and the preceding memoir are 

 chiefly interesting as illustrating the author's leaning 

 towards the physiological aspect of natural history (cf. 

 p. 4). 



An address delivered at St. Martin's Hall, July 22, 

 1854, " On the Educational Value of the Natural History 

 Sciences" (Coll. Essays, iii, p. 38), marks the beginning 

 of one important side of Huxley's life-work, i.e., his 

 persistent endeavour to secure a fitting place for science 

 in education. In these later days, when our educational 

 systems and ideals are undergoing revision, the claims 

 of science are not likely to be forgotten, thanks very 

 largely to the strenuous pioneer efforts of Huxley and men 

 of his stamp. 



