Hymns for the sacraments

Mr Pickles points out, interestingly, that whereas Beddome's hymn book contains 38 hymns on baptism, there are only four on the Lord's Supper. I wonder if that is because of the way the hymns were prepared - as accompaniments to the sermon. Baptisms would part of the service ending with an appropriate hymn. When the Lord's Supper was celebrated once a month it usually took place after the main service and normally included no singing. (This is a guess).