Practical Gemology refers to the application of the knowledge of characteristics and properties of gemstones in identification or separation of synthetics and imitations. Diamond grading is included in practical gemology.
In November 1919 and January 1920, in what notoriously became known as the âPalmer Raids,â Attorney General Mitchell Palmer began rounding up and deporting so-called radicals. Thousands of people were arrested without warrants and without regard to constitutional protections against unlawful search and seizure.
Harpers Ferry Raid: October 16-18, 1859. On the night of October 16, 1859, Brown and his band overran the federal arsenal. Some of his men rounded up a handful of hostages, including a few slaves. Word of the raid spread and by the following day Brown and his men were surrounded.