This welcome series continues to appear. Several important articles in Volume A26 are concerned with applications of polymers. By chance of the alphabet, these include "Surgical materialsÏ (21 pp.Èan excellent summary, well referenced, by D. F. Williams of Liverpool) ; "Tapes, adhesiveÏ (6 pp.Èfrom 3M, who know a lot about the subject but do not say it here) ; "Tar and pitchÏ (38 pp.Èfrom DECHEMA and Weyl GmbH), and "Tar sandsÏ (33 pp.Èfrom F. J. Mink and R. N. Houlihan of Alberta, Canada, who make crude oil extraction seem easy, in comparison) ; "Terephthalic acid and dimethyl-terephthalatesÏ (11 pp.Èby R. J. Sheenan of Amoco : a useful summary of the production and properties of the precursors of polyester resins) ; "Textile auxiliariesÏ (123 pp. in seven sectionsÈby authors from BASF, Henkel, Hoechst and Hickson Danchem, with much detail in what is probably the most recent and comprehensive source on a broad and ill-deÐned subject, with over 600 references) ; "Textile dyeingÏ (136 pp. in 14 sectionsÈmainly by authors retired from BASF, with additional contributions from Bayer, HoechstÈCassella and Dresden, describing general methods, with much detail on processing of speciÐc polymer types of Ðbres (including silk and wool) with over 550 references) ; "Textile printingÏ (63 pp.Èby authors from Bayer AG, again, with much detail on