A preparation for giving a shining black surface to boots and shoes; a shoe polish. [OED]

Seems to have been lighter than porter and weaker than "strong" ale. [Barclay Perkins Brewery
http://barclayperkins.blogspot.co.uk/2010/11/lets-brew-wednesday-1804-barclay.html]

[Note 006.1] This etching by Thomas M'Lean dating from about 1828 shows the way in which the streets of the time were covered with advertisments. The bill to the left of the harp advertises 'Calais in five hours' (See Bar050, Calais Packet). The placard held aloft in the top left corner advertises a 'New Patent steam coach from London to York'

[Note 006.2] Verse 1, Line 5: from Whitechapel Church up to Hyde Park. The route crosses the city from its eastern to western limits as they stood about 1827.

Gloss - Epping sausages. The Foods of England Project describes them as Skinless pork and beef sausages with sage, lemon and nutmeg. [http://www.foodsofengland.co.uk/eppingsausages.htm]

gloss - Edinbro' ale: Robert Disher first produced Edinburgh Pale Ale in 1821 [Ref. Edinburgh Brewing Company http://edinburghbrewing.co.uk/edinburgh_pale_ale_lifeblood.htm]

gloss - tripe(1) The first or second stomach of a ruminant, esp. of the ox, prepared as food; formerly including also the entrails of swine and fish.
plain tripe is the first stomach, paunch, or rumen, honeycomb tripe the second, or reticulum. [OED]

[Note 006.3] The first wellington boots were made of leather. A typical weekly wage was less than 10 shillings. Bargery 006 has the line Wellington boots, fifteen shillings a pair.

[Note 006.4] The Nore is a sandbank at the mouth of the Thames Estuary. It marks the point where the River Thames meets the North Sea [ref https://en.wikipedia.org/wiki/Nore] and would thus be a natural point at which the steamer could turn for home.

[Note 006.5]Several new water supply companies were established between 1800 and 1820. https://en.wikipedia.org/wiki/London_water_supply_infrastructure

[Note 006.6]Cherry Ripe in a setting by Charles Horn was published in 1825 [British Library H.1653.q.(9.)] and made popular by Eliza Vestris who sang it in the musical comedy Paul Pry so the song can be no earlier than 1825

gloss bear's grease the fat of the bear, used esp. in medical and cosmetic preparations [OED]
The website Victorian London says that 'In hairdressers' windows and over barbers' shops notices relating to bears' grease were perpetually seen, such as, "Bears' grease fresh this week"; "Bears' grease personally prepared" ; "Try our special Bears' grease." And less frequently, "We kill a bear this week." In the 1850s it was an article of faith that bears' fat nourished the scalp' and hair.

http://www.victorianlondon.org/publications5/londoners-10.htm

[Note 006.7] Charles Wright's champagne was renowned for its cheapness and critics asserted that it was not French in origin. Wright took the matter to court in 1827
[Matoff, S; Conflicted Life: William Jerdan, 1782-1869, London Editor, Author and Critic, p171]
This Advertisement for Charles Wright's Champagne, Engraved by George Hunt, appeared at about that time. In the background three decrepit individuals stagger beneath a sign reading "Baths" and to the right two healthy looking men stand beneath signs reading "Charles Wright's Champagne."

gloss - dry nurse A woman who takes care of and attends to a child, but does not suckle it (opp. to wet-nurse); formerly, also, in the general sense of ‘nurse’.[OED]

gloss charity sermon Presumably a sermon given to raise funds for a good cause. The latest citation in the OE is 1817.