Calendar: 1967-1968 Page 451

cxxii Annual Report of the Delegacy Chapman Jones 11 Todd and Challinor Observations on the propagation constant of the earth-ionosphere wave- guide in the frequency band to 16 kc Proc 12th Symposium of the Avionics Panel of AGARD NATO Paris April 1966 Collins Dean Lightowlers and Sherman 'Acceptor-impurities absorption in semiconducting synthetic dia- mond Phys Rev 140 1965 1272 Dean 'Bound excitors and donor-acceptor pairs in natural and synthetic dia- mond Phys Rev 13g 1965 583 Dean Lightowlers and Wight 'Intrinsic and extrinsic recombination radiation from natural and synthetic aluminium-doped diamond Phys Rev 140 1965 352 Decius Jacobsen Sherman and Wilkinson 'Cynate ion in alkali halides new vibrational levels and interpretation of localized lattice modes Chem Phys 43 1965 2180 Domb and Hunter On the critical behaviour of ferromagnets Proc Phys Soc 1965 1147 Domb 'Critical properties of lattice models Proceedings Conf on Phenomena in the Neighbourhood of Critical Points Washington April 5th-8th 1965 published 1966 On co-operative effects in finite assemblies Proc Phys Soc 1965 933 'λ-point transitions Low Temperature Physics-LTg 1965 637 'First-order and λ-point transitions in ordering assemblies Proc Phys Soc 1966 260 Edwards and Swales 'Floating wire measurements on the double-focussing η spectrometer Rutherford High Energy Laboratory Progress Report 114 1965 Fannon Ά proposal for large angle bending magnet for momentum analysis in the η beam lines Rutherford High Energy Laboratory Progress Report 121 1965 Fisher Μ 'Correlation functions and the coexistence of phases Math Phys 1965 1643 'The theory of condensation Proc Centennial Conf Phase Transforma- tion University of Kentucky March 18th-20th 1965 'Theory of critical fluctuations and singularities Proc Conf on Pheno- mena in the Neighbourhood of Critical Points Washington April 5th-8th 1965 publ June 1966 'Critical point singularities Notes definitions and formulas for lattice gases and Ising magnets Proc Conf on Phenomena in the Neighbourhood of Critical Points Washington April 5th-8th 1965 publ June 1966