Criminal Law-Penal Code-Section 71 (a)-Being a member of the Mau Mau society-Section 71 (b)-Knowingly allowing a meeting of an unlawful society to be held in a house-Evidence-Risk of convicting on evidence of one eye-witness-Accomplice-Danger of conviction on uncorroborated evidence of-Whether burden of proof shifted to defence-Criminal Law and Procedure-Defective particulars of charge-Misleading particulars.