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On the Artaftcial Production of Cournaih and Formation oj* its Homologues.

IN Home considerations on the formation of coumarin by means of the hydride of sodium-salicyl and acetic anhydride, which I had the honour of laying before the Society only a short time since,* I mentioned that the formation of this body appeared to be the result of two distinct reactions-the first consisting in the replacement of an equivalent of hydrogen in the hydride of salicyl by acetyl-the second in the removal of a molecule of water fiom this acetylic derivative. I also stated that I had succeeded in obtaining the body resulting fiom the first reaction, and which I termed the hydride of aceto-salicyl. The present * Page 60 of thie volume.

Influence of the ortho. meta. and para. and also of the a and B positions of Irregularities in the rotations of some methylated phenolic compounds. also of some toluene and napht hylene derkatives of the dimethyltoluidines and

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