EDITORIAL ... 165

TRIBUTES
John R Marier (1925 -1992)
  Jeff Marier ... 166-167

A Tribute to John R Marier
  Dyson Rose ... 167-168

RESEARCH REPORTS
Report on the Fifth Fluorine Symposium in Szczecin
  A Machoy-Mokrzynska,
  Poland ... 169-170

Introduction to the Fifth Fluorine Symposium in Poland
  GW Miller, USA ... 170

Interaction of fluoride ions with milk proteins studied by gel filtration
  P Wieczorek, D Sumujlo, D Chlubek,
  Z Machoy, Poland ... 171-174

Effects of fluoride toxicity on leaf area, net assimilation rate and relative growth rate of Hordeum Vulgare and Zea Mays
  S Rathore, India ... 175-182

The fluorosis problem in tropical sheep
  UN Samal, BN Naik, India ... 183-190

Letters to Editor
Vitamin C deficiency and fluorosis
  A Mithal, MM Godbole ... 191-192

Reply to Mithal And Godbole
  UK Misra ... 193-194

ABSTRACTS
Red cell membrane alterations in human chronic fluoride toxicity
  D Sarala Kumari,
  P Ramakrishna Rao, India... 195

Diacylglycerol generation in fluoride-treated neutrophils: involvement of phospholipase
  DD English, G Taylor,
  JGN Garcia, USA ... 195

Sodium fluoride influence upon energy and protein liver metabolism after its experimental ischemia
  M Tyrtyshnikov, VP Pedik,
  Ukraine ... 196

Multiple actions of fluoride ions upon the phosphoinositide cycle in the rat brain
  G Tiger, P-E Björklund, G Brännström.
  CJ Fowler, Sweden ... 196

Fluoride, calcium and phophorus metabolism in the rat: comparison 'natural ingredient' with semipurified diets
  GM Whitford, USA ... 197

A comparative study of fluoride pharmacokinetics in five species
  GM Whitford, ED Biles,
  NL Bindsong-Whitford, USA ... 197-198

The effect of calcium on disodium monofluorophosphate absorption from the gastrointestinal tract of rats
  A Villa, G Carrasco, A Valenzuela,
  A Garrido, Chile ... 198

Inhibition of proton-translocating atpases of Streptococcus Mutans AND Lactobacillus Casei by fluoride and aluminum
  Michael G Sturr,
  Robert E Marquis, USA ... 198-199

Aluminum stimulates the proliferation and differentiation of osteoblasts in vitro by a mechanism that is different from fluoride
  K-H William Lau, A Yoo,
  SP Wang, USA ... 199-200

Effect of fluoride on bone and bone cells in ovariectomized rats
  D Modrowski, L Miravet, M Feuga,
  F Bannie, PJ Marie, France ... 200

Incorporation of sodium fluoride into cortical bone does not impair the mechanical properties of the appendicular skeleton in rats
  TA Einhorn, GK Wakley, S Linkhart,
  EB Rush, S Maloney, E Faierman,
  DJ Baylink, USA ... 201

A histomorphometric analysis of the effects of fluoride on experimental ectopic bone formation in the rat
  H Mohr, J Kragstrup, Denmark ... 201

The effects of fluoride on bone
  Helen E Gruber, DJ Baylink ... 202

Fluoride therapy for osteoporosia review of dose response, duration of treatment, and skeletal sites in action
  BA Dure-Smith, ME Kraenzlin,
  SM Farley, CR Libanati,
  EE Schuttz, DJ Baylink,
  USA ... 202-203

Is fluoride treatment justified today?
  Jukka A Inkovaara, Finland ... 203

Dose effects on ewe bone remodeling of short-term sodium fluoride administration: a histomorphometric and biochemical study
  P Chavassieux, P Pastoureau,
  G Boivin, MC Chapuy, PD Delmas,
  PJ Meunier, France ... 203

Fluoride-induced bone changes in lambs during and after exposure to sodium fluoride
  P Chavassieux, P Pastoureau,
  G Boivin, MC Chapuy, PD Delmas,
  G Milhaud, PJ Meunier, France ... 204

Studies of fluoride retention by oral soft tissues after the application of home-use topical fluorides
  DT Zero, RF Raubertas,
  AM Pedersen, J Fu,
  AL Hayes, JDB Featherstone,
  USA ... 204-205

Effects of fluoride on secretory and postsecretory phases of enamel formation in sheep molars
  Guy E Milhaud DVM, Eliane Charles,
  Marie-Laure Loubière DVM, Martine Kolf-Clauw DVM,
  Christophe Joubertt, France ... 205

Influence of fluoride and carbonate on in vitro remineralization of bovine enamel
  PC Lammers, JMPM Borggreven,
  FCM Driessens, JWE Van Dijk,
  Netherlands ... 206

Benefits and risks of fluoride supplementation: caries prevention versus dental fluorosis
  W Dhoore, JP Vannieuwenhuysen,
  Belgium ... 206

AUTHOR INDEX for 1992 ... 207-208

SUBJECT INDEX for 1992 ... 209-210