■ Ghana’s Last Chance? Cynicism about public morality is still not so deep in Ghana that confirmation of one of the widespread allegations against men in high office can now be answered simply by the resignation of the guilty man ■ Portrait: New man in castle: In a previous portrait of an African military man a correspondent made a distinction between the avuncular and the dashing types of officers ■ Roundabout: Student of English: During his visit to Britain last week, President Hamani Diori of Niger discussed the sending of British teachers of English to Niger ■ Sierra Leone as a market: Credit is given to the sincere and hard working government of Sierra Leone in a report on their visit to the country last February by Sir Arthur Smith, chairman of the Africa committee of the British National export council ■ Nigeria's power struggle: So overwhelming has become the place of mineral oil in the Nigerian economy that it is easily forgotten that almost alone among the countries of tropical Africa ■ Books and publications: Cities in crisis: Urban government for metropolitan Lagos by Babatunde A. Williams and Annmarie Hauck Walsh ■ Commercial news: Nigeria: Groundnut Pyramids to Go? Nigeria's groundnut stocks may all have been reduced to negligible size at the end of the current season says the tropical products quarterly ■ Dateline Africa: Ghana: Afrifa installed: Politics on May day: Lt. Gen. Joseph Ankrah's resignation as chairman of the National Liberation Council was announced on April 2 ■ Dateline Africa: Nigeria: Federal forces near Umuahia: Biafran evacuation of Umuahia began about April 4 in face of the Federal attack, said a report in the French paper Le Figaro