Blurb:

Chapter two outlines the development of the idea of strata beginning with 19th century aphasiological models which introduced the idea of a language faculty with distinct components contributing different functions and following with the work of de Saussure on the distinction between signifier and signified and the relational character of the sign, Hjelmslev’s elaboration of the relational character of language into distinct ‘planes’, Lamb’s adaptation of Helmslev’s model in stratificational linguistics, and Halliday’s adaptation of strata to his systemic model.