Rule 16 (3) of this court (Code Ann. 24-4516 (3), 221 Ga. 884) provides as follows: "The brief of the appellant shall consist of two parts: . . . (3) Part one shall contain a statement of each error enumerated. It shall also contain succinct and accurate statements of the issues of law as made by the errors enumerated and shall refer to parts of the record and transcript of the evidence relied upon in support thereof. Any enumeration of error not thus dealt with will be disregarded." (Emphasis supplied).