By inflating the stomach at such a period, we inevitably counteract those muscular contractions of its coats which are essential to chymification, whilst the quantity of soda thus introduced scarcely deserves notice; with the exception of the carbonic acid gas, it may be regarded as water; more mischievous only in consequence of the exhilarating quality, inducing us to take it at a period at which we would not require the more simple fluid.