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Note:  Do not rely on this information. It is very old.

Galactose

Galactose, a sugar containing six atoms of carbon in the molecule. It originally received the name lactose, but this is now applied to a totally different compound, milk sugar, from which galactose itself, together with the isomeric dextrose, may be prepared by boiling for some hours with a dilute acid. It has the same composition as dextrose, which it further resembles in its action on polarised light, being dextro-rotatory, in fermenting under the influence of yeast, and in reducing Fehling's solution (q.v.). It forms small prismatic crystals, which melt at 166°, and which are soluble in water, though not as readily as dextrose. It yields by oxidation two acids - (1) galactonic acid, and (2) mucic acid, while by reduction it gives rise to a body of the nature of an alcohol, dulcitol (q.v.). It is estimated quantitatively in the same manner as dextrose.

“Are you dejected? here is comfort. Are you sinful? here is righteousness. Are you led away with present enjoyments? here you have honours, and pleasures, and all in Christ Jesus. You have a right to common pleasures that others have, and besides them you have interest in others that are everlasting, that shall never fail; so that there is nothing that is dejecting and abasing in man, but there is comfort for it in Christ Jesus.”
–Richard Sibbes, Description of Christ