The physiography of the river Nile and is basin . byssinian rains ; a floodb(dow the average impro\ ingin September w ould haxc beenexpected from the jiressureconditions. (Jood low stage maintainedexcess till ].) .Tunc, then defecttill 20 October when moderateexcess occurred. Early rains, and very late rainsfair, but main rains failed,and this the |)ressure fairlyindicates. Defect to end of June thenmoderate to good excess to endof August then again defect. High pressure in June seems tohave corresponded with weak-ness of early rains, while theJuly-August rains were bet-ter than might have bee
The physiography of the river Nile and is basin . byssinian rains ; a floodb(dow the average impro\ ingin September w ould haxc beenexpected from the jiressureconditions. (Jood low stage maintainedexcess till ].) .Tunc, then defecttill 20 October when moderateexcess occurred. Early rains, and very late rainsfair, but main rains failed,and this the |)ressure fairlyindicates. Defect to end of June thenmoderate to good excess to endof August then again defect. High pressure in June seems tohave corresponded with weak-ness of early rains, while theJuly-August rains were bet-ter than might have beenanticipated. Slight defect increasing to con-siderable 20 July-Id Augustmoderate excess in second halfof September. High pressure corresponding toweakness of June and July amasaavw Q»ff3H«»aQMTA rjHTwow *tA3w to jwmrom MOf« *?.< oeai 0981 aaei fssi aaai eaei V-^ ISTO 1871 1873 1873 1874 IBT5 1876 1677 1878 ISTS VARIATIONS FROM NORMAL OF MEAN MONTHLY ATMOSPHERIC PRESSURE181 isei reea ia84 isas isse i88t isse leao iseo flOO iBDl 1903 ISM. IB79 IB76 1677 1678 1879 1860 I8B1 o — -Mr, — Veau 1887 1888 iXS.) Katioof flood of year tomean flood
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