EDITORIAL
The Manners of Science ... 1

ANNOUNCEMENT
XXth ISFR conference, Beijing, China,
  September 5-9, 1994 ... 2

RESEARCH REPORTS AND REVIEWS
Effect of fluorine ingestion on cell-mediated immune response in calves
  V Kapoor, T Prasad, India ... 3-6

Effect of fluoride on rat testicular steroidogenesis
  MV Narayana, NJ Chinoy,
  India ... 7-12

Is there a dental benefit from water fluoride?
  John Colquhoun,
  New Zealand ... 13-22

Teratogenic effects of fluoride on chick embryo
  S Krupanidhi, TM Dhanarajan,
  India ... 23-31

Case report: mass fluoride poisoning, Hooper Bay, Alaska a review of the final report of the Alaska department of Health and Human Services, April 12, 1993
  Richard G Foulkes, Canada ... 32-36

A critique of recent papers by Dr John Colquhoun
  G Neil Jenkins, England ... 37-44

Reply to Professor Jenkins' critique
  John Colquhoun,
  New Zealand ... 45-48

Conference Abstracts and Discussion
Dental effects of discontinued water fluoridation in Guangzhou China
  A Tsutsui, O Sakai, S Kobayashi,
  M Yagi, K Horü, Y Shen,
  Japan and China ... 49

DISCUSSION ... 49-50

The prevalence of dental fluorosis and dental caries in the natural fluoride area of central Taiwan
  M Yagi S Kobayashi, K Horü,
  A Tsutsui, Y Gunjishima, O Sakai,
  M Chou, Japan and Taiwan ... 50

DISCUSSION ... 50-51

ABSTRACTS
Reversible impairment of glucose tolerance in patients with endemic fluorosis
  N Trivedi, A Mithal, SK Gupta,
  MM Godbole, India ... 52

Urine, serum and hair monitoring of hydrofluoric acid workers
  K Kono, Y Yoshida, M Watanabe,
  Y Orita, T Dote, Y Bessho,
  Japan ... 52-53

Effect of controlled local release of sodium fluoride on bone formation - filling a defect in the proximal femoral cortex
  AP McCormack, PA Anderson,
  AF Tencer, USA ... 53

Protective effect of topically applied fluoride in relation to fluoride sensitivity of Mutans Streptococci
  C Vanloveren, JF Buijs, JM Tencate,
  Netherlands ... 54

Perceptions of dental fluorosis
  PJ Riordan, Australia ... 54-55

Enamel defects in 4-year-old to 5-year-old children in fluoridated and non-fluoridated parts of Cheshire UK
  KJ Weeks, KM Milsom, MA Lennon,
  England ... 55

Sealants revisited: An update of the effectiveness of pit-and-fissure sealants
  LW Ripa, USA ... 56

Integrated caries prevention: effect of a needs-related preventive program on dental caries in children - county of Varmland, Sweden - results after 12 years
  P Axelsson, J Paulander, G Svardstrom,
  G Tollskog, S Nordensten,
  Sweden ... 56-57

An epidemiological assessment of the chronological distribution of dental fluorosis in human maxillary central incisors
  RW Evans, Australia ... 57

Role of GTR-binding proteins in regulation of Na⁺/H⁺-exchange and Na⁺,K⁺,2Cl^–-co-transport effect of fluoride ion.
  IA Kolosova, J Bemhardt, SN Orlov,
  FR Buhler, Russia ... 58

Stoichiometry of tight binding of magnesium and fluoride to phosphorylation and high-affinity binding of ATP, vanadate, and calcium in the sarcoplasmic reticulum Ca²⁺-ATPase
  T Daiho, T Kubota, T Kanazawa,
  Japan ... 58