Table of Contents of the Fourth  Saudi Biological Society Conference

• A STUDY OF TRITICALE PLANTING DATES IN THE CENTRAL REGION OF SAUDI ARABIA , Y. M. Makki, H. I. Sayed and M. M.

• VARIETY TRAIL, METHOD OF SOWING AND STORAGE OF ONION (ALLIUM CEPA, L.) IN RIYADH REGION , Nabil Y. Abdalla, M. A. Bacha and A.T. Abdel Hafeez

• ENVIRONMENTAL EFFECTS ON PERFORMANCE OF CENTER-PIVOT SPRINKLER IRRIGATION SYSTEMS , Atuf Hamra, Musa Nimah and Jack Bond

• ANALYSIS OF DIFFERENCES IN YIELD BETWEEN INDIGENOUS STRAINS OF WHEAT FROM SAUDI ARABIA AND SHORT VARIETIES FROM MEXICO , Salih M. Samarrai and AbdelSalam S. El-Sayad

• KOCHIA: PROSPECTIVE FORAGE PLANTS IN SAUDI ARABIA, M. A. Zahran and Y. Maghraby

• EFFECT OF SALINITY ON SEED GERMINATION AND GROWTH OF ORACHE (A TRIPLEX SPP.) , A. Abo-Hassan, H. Tawfic and M. Habib

• IDENTIFICATION OF YEASTS ISOLATED FROM AL-HASSA OASIS, SAUDI ARABIA , H. El-Nakhal*, H. J. Phaff** and M. Miranda** *

• SALMONELLAE IN IMPORTED ANIMAL FEEDING STUFFS IN SAUDI ARABIA, Nassim H. Nabbut, Elie K. Barbour, Suleiman I. Zamel and Habeeb M. AI-Nakhli

• STUDIES ON BIOLOGICAL NITROGEN FIXAnON I. "ON THE OCCURRENCE OF DIAZOTROPHS AND OLIGONITROPHILES IN ASEER REGION"  M. R. EI-Naggar and H. A. Emara

• A PHYSICO-CHEMICAL AND MICROBIOLOGICAL STUDY OF MARKET MILK IN THE RIYADH AREA, A. R. EI-Erian and J. S. AIShaikhli

• ELECTRON MICROSCOPIC OBSERVATIONS ON ULTRA THIN SECTIONS OF BACILLUS STEAROTHERMOPHILUS , A. H. Abu-Zinada, A. Hossain and H. 1. Yonis

• A STUDY ON FERMENTED MILKS IN THE RIYADH AREA; INCIDENCE OF COLIFORM CONTAMINATION , J. S. AI-Shaikhli

• MUTANTS OF GREEN ALGAE, T.M. Khoja, A. Hossain* and Y. A. Saheal

• HYDROCARBON-UTILIZING MICROORGANISMS FROM EASTERN AND CENTRAL PROVINCES OF SAUDI ARABIA , A.H. Abu-Zinada and A. M. Sabek

• ON THE OCCURRENCE AND IDENTITY OF URICOLYTIC MICROORGANISMS IN ASIRI SOILS, M. R. EI-Nagger and H. A. Emara

• CHEMICAL COMPOSlTlON OF IS V ARlTlES OF DATES GROWN IN SAUDI ARABIA, Mohammed J. Abdel Hafiz, Ahmed F. Shalabi and Ibrabim Al Akhal

• HYPOGLYCEMIC EFFECTS OF HAMACHATUS HEMACHATUS AND PISCIVOROUS PISCIVOROUS SNAKE VENOM , S. A. Taha, A. C. Ellison and M. Qato

• POWDERY MILDEWS IN THE CENTRAL REGION OF SAUDI ARABIA Zaydan , M. Abul Hayja, Ibrahim Y. Trabulsi, M. Fathi and Ashraf Bahi

• EFFECT OF BENOMYL AND ITS METABOLITE CARBENDAZIM ON TWO FUNGI I. Y. Trabulsi, A. A. Komeil and S. EI-Hossany

• SEASONAL VARIATIONS IN THE POPULATION OF SOIL ARTHROPODS AND SOIL BACTERIA lJNDER DATEPALM TREES AT AL-HASSA REGION (EASTERN PROVINCE, KINGDOM OF SAUDI ARABIA) , S.M. Hammad*, Hamza M. EINakhal**, M. M. Ramadan * and A.N. Wabdan** *

• THE PRACTICAL IMPORTANCE OF THE SURVEY OF ARTHROPODS IN SAUDI ARABIA AND ITS IMPORTANCE IN PLANT PROTECTION STRATEGIES , A.S. TaIhouk, Khaled AI Taher, Sarkis Tilkian and Mit'ib AI Tyssa

• INFLUENCE OF TEMPERATURE, PHOTOPERIOD AND HOSTPLANT ON THE BIONOMICS OF THE MELON LADYBIRD EPILACHNA CHRYSOMELINA (F.) , M. A. Ali and A. A. EI-Saeady

• SOME NEW STORAGE AND MARKET DISEASES IN SAUDI ARABIA I. VEGETABLE DISEASES , M. Y. Kasirn, H. M. Shalr and Shamsher Khan

• NEW PLANT DISEASES IN ALHASSA OASIS, M. A. Nagieb, H. Eisaid*, N. Jahin* and H. Elarousi* Hassa

• EFFECT OF FUNGICIDES (BAVISTIN AND BENLATE) ON THE NODULATION OF SOYBEAN (GLYCINE MAX), Y. Trabulsi, M. E. AbdelSamea and A. Y. Bahy

• OCCURRENCE AND SEASONAL VARIATION OF SOME GASTROINTESTINAL HELMINTHS OF THE DROMEDARY, CAMELUS DROMEDARlUS, IN SAUDI ARABIA , Sabir EI Bihari and Z. A. Kawasmeh

• DERMAL MYIASIS IN FARM ANIMALS IN HOFUF AREA WITH SPECIAL REFERENCE TO THE CLINICAL PICTURE AND SURGICAL MANAGEMENT, b

• OUTBREAKS OF COENUROSIS IN SHEEP AND GOATS IN THE CENTRAL PROVINCE OF SAUDI ARABIA , Ahmed I. Radwan and Saad I.

• A PPR-LIKE DISEASE OF SHEEP IN CENTRAL SAUDI ARABIA: EVIDENCE OF ITS IMMUNOLOGIC RELATION TO RINDERPEST; PROSPECTS FOR A CONTROL METHOD, Joseph A. Asmar, Ahmad I. Radwan, Hanna Abi Ass! and Abdullah Al Rasheid

• TICKS OF SAUDI ARABIA 1. TICKS (IXODOIDES) INFESTING IMPORTED AND LOCAL BREEDS OF DOMESTIC ANIMALS AT JEDDAH , A. A. Banaja, M. H. Madbouly and M. A. Roshdy

• ASPECTS OF SPERM AXONEME PATTERNS IN PYCNOGONIDS , A. S. N. EI-Hawawi

• EFFECT OF DIET CONSTITUENTS ON THE BIOLOGY OF SAW-TOOTHED GRAIN BEETLE, ORYZAEPHILUS SURINAMENSIS L. (COLEOPTERA: CUCUJIDAE) , M. A. AIi*, A. H. Kamel** and H. M. EI-Bishlawi** ·Plant Protection

• CELL DEATH AND PHAGOCYTOSIS IN THE MOUSE UTERUS DURING EARLY PREGNANCY , Abdel-Fattah M. El-Shershahyx and Monlr A. EI-GanzuTi

• COMPARATIVE STUDY OF THE METABOLIC RESERVES IN HIBERNAT1NG AND NONHIBERNATING ADULTS OF THE MELON LADYBIRD BEETLE _EPILACHNA CHRYSOMELINA (F.) (COLEOPTERA: COCCINELLIDAE), M. A. Ali and A. H. A. EISaeady*

• RANGE ECOLOGY, A. M. Migahid

• AGRICULTURA..L CROP POLICY AND ITS ROLE IN AGRICULTURAL DEVELOPMENT , N. Y. Abdullah, M. M. Sabri and M. Habeeb

• STUDIES ON SOME HIGHER PLANTS PARASITIC ON TREES OF SAUDI ARABIA , A. Qadri and Y. Maghrabi