Garrison, too, was impressed with Douglass, mentioning him in the Liberator. Several days later Douglass gave his speech at the Massachusetts Anti-Slavery Society's annual convention in Nantucket-- the speech described at the top of this page.
The abbreviation viz. (or viz without a full stop), short for the Latin videlicet, is used as a synonym for namely, that is to say, to wit, or as follows. It is typically used to introduce examples or further details to illustrate a point.
All Acronyms. MRSE - Manifest Refraction Spherical Equivalent [Internet]; Apr 17, 2017 [cited 2017 Apr 17]. Available from: https://www.allacronyms.com/MRSE/Manifest_Refraction_Spherical_Equivalent.