With increased ease of digestion, which comes with more thorough attention to solid foods alone, the ordinary observer will think that he has accomplished the whole of the possible benefit. It is only when he gives sufficient time to liquids also, to get the added delight and relief that salivary respect of them brings, that the whole of the beneficence of mouth-service is realised. Follow this discrimination and care to a comparative measurement of the waste of digestion, the solid excreta, and note the increased proportionate gain in assimilation and the value of the economy will be appreciated. Try the different treatments on milk for a month; fifteen days with drinking and fifteen days insalivating (sipping and tasting) the milk to the limit, and keep account of quantity of intake required to satisfy appetite and maintain body-weight; and also note carefully the condition and quantity of the fæces. In the one case you will find the waste to be _fæces_ indeed, and unmistakably worthy of the name; but in the case of sipping, tasting and insalivating the milk to the full satisfaction of the appetite, the _digestion-ash_ will assume quite a different amount and character and deserve a change of name. The proportions of the saving in our own experiments have approximated the difference between three and ten; that is, on a reduction of only one-third the quantity of food commonly ingested, but fully satisfying the sipping and tasting appetite, the quantity of solid excreta was only one-tenth of the other and of quite a different character, æsthetically considered. While these suggestions do not discredit or affect the value of the purely mechanical side of the treatment as given by Dr. Campbell, and are not intended to be controversial, they are ventured as an amendment to be worked out in regard to liquids, which are, in fact, only an extreme of the pultaceous foods against which Dr. Campbell warns us as being subtly dangerous. There is another point in our experiences and observations of the largest importance that may appropriately be introduced here: The treatment of all liquids in the manner suggested prevents intemperance of drinking as effectively as it does intemperance of eating.