works, the following manner:— CHs+HO-OH = CH;-O0H+OH, Methylic alcohol CH;0H+HO-OH = CH.(OH)+OH_ Formalde- hydrol CH(OH)3+OH2 Formacid- hydrol Ortho- carbonic acid. Formaldehydrol passes by dehydration into formaldehyde, CH.(OH)., formacidhydrol into formic acid, orthocarbonic acid into the bionomics and classification of coffee, the concluding stages in the sales of estates, factories, etc. British 49 acrial survey activities are:— . 1. To