Sir, - The deliberations of the Minister of State for Children on proposed adoption legislation, as reported in your newspaper (The Irish Times, April 8th and 9th), fail to take account of the fact that the right of all adoptees to have access to their birth certificates is in effect a separate issue from the desire of certain adoptees to make contact with their birth mothers. In my own case, where contact is not the issue, as an Irish adoptee planning to marry in Germany, I was recently informed by the German authorities that the marriage could not take place until my original birth certificate had been lodged. The reason for the requirement is sensible: to ensure that siblings do not wed each other, yet current legislation in this country seeks to prevent me from procuring the vital document. Proposals being mooted by the Minister to make access to birth certificates conditional on the consent of birth mothers would require me to request permission to marry from mine! - Yours, etc., Maire Ni Mhaonaigh,Mawson Road,Cambridge,England.