Features of Crustal Structure and Upper Mantle in the Central Part of South China Sea as Inferred from Gravity Anomalies Lin Jinfeng Study on the Development History and Stability of the Tidal Channel in Shantou Harbour Wang Wenjie Distribution of Foraminifera and Ostracoda from the Surface of the Bottom Sediments off the Xisha-Zhongsha Islands,South China Sea Cai Huimei,Tu Xia Settlement of Balanus reticulatus Utinomi Yan Wenxia,Pang Jingliang,Chen Xingqian Effects of Co60 γ-Rays on the Carposporelings of Gracilaria verrucosa(Huds.)Papenfuss(Rhodophyta,Gigartinales) Wang Yongchuan,Shi Shenglu Comparison of the Respiration Rates of Porphyra guangdongensis and Porphyra haitanensis Li Gang,Huang Liangmin,Liu Xuedong,Wang Yongchuan Preliminary Study on the Geographical Distribution of Shallow-water Scleractinia Corals from China Zou Renlin,Chen Youzhang Notes on the Conus(Gastropoda,Mollusca)from the Xisha Islands Zhou Jinming Preliminary Investigation on the Benthos in the Northern Beibu Gulf Li Guozhen The Consumption Rate of Dissolved Oxygen in Abyssal Basin Water Han Wuying The Distribution Features of Nutrient Salts(Phosphate and Silicate)in the Central area of South China Sea Lin Zhiqing,Li Feiyong The Relationship between the Dissolved Oxygen and Phosphate in the Central Region of South China Sea Wu Linxing Calculations on Diffractions of Irregular Waves Chen Junchang Small Disturbance Motion of Typhoon System in the Sea Level Yuan Shuyao,Xu Jiajun “South China Sea Buoy No.1”An Automatic Telemetering Ocean Data Buoy System New Technics Laboratory,South China Sea Institute of Oceanology,Academia Sinica The Improvement and Experiment of Sea-Surface Temperature-Humidity-Wind Gradient Buoy Type HT-1 Zhang Qingrong,Wang Dingxiang,Wu Weihua,Wang Guanyang,Lin Xigui,Cai Qingbing The Test For A Deep-Water Moored Buoy System Chen Fupei A Model AD-1 Polarography,an Anodic Stripping Voltammetry with Mercury Film Electrode Method Could Simultaneously Determine Copper,Lead,Cadmium and Zinc in Seawater Chen Jinsi,Wang Zhaoding