The estimation of the alcohol can be made in the same manner as in beer, with a few precautions. Thus, in the distillation method it is better to neutralize the sample taken with carbonate of soda, or standard alkali, and a slight addition of tannin will generally be found necessary to prevent frothing. If the indirect method is used, more accurate results will be obtained by neutralization of the sample taken by shaking up with magnesia before the specific gravity is taken. In the present work I have made use of the distillation method exclusively, weighing out the sample taken, about 50 grams, making up to about 100cc. and distilling off 50cc., which is also weighed. Tables for the calculation of alcohol content from the specific gravity have already been given page 285).