very rare early 1850's iron-pontiled cornflower blue glass soda or mineral bottle manufactured for chicago bottler joseph entwistle. the front body features a clean strike in the form of the bottler's name and city embossed in block lettering. the state abbreviation "ill." is significantly worn, and a crudity in the embossment is that the 's' in entwistle is backwards. the sloping shoulders have a squat neck finished with a crude applied collar. the finish is asymmetrical and rounded at the bottom, with diagonal stretch marks below the lip running down the neck. the bottle has a large bubble near the heel, and allover irridization appearing as a rainbow-like patina. the base has a shallow kickup with some residue from manufacture with iron pontil. previously listed as a barkeeper, in 1851, joseph entwistle was listed in a city directory as a soda water manufacturer. this makes him only the second known chicago soda water bottler following joseph dinet to have embossed bottles. in 1852-3, according to city directories, entwistle became a senior partner with edward bebbington and george lomax on canal street between lake and fulton. the partnership is only documented to have lasted through 1854. from then on it appears entwistle made a somewhat unsuccessful effort to start his own chicago bottling business. according to another nineteenth century document, in 1855, john lomax traded a small house and lot he owned for a one-half interest in the soda water business of joseph entwistle, which was then located at no. 39 west lake street. the firm of entwistle & lomax continued for about three years, when mr. lomax purchased his partner's interest and became the sole proprietor of the business. he remained at no. 39 west lake street until 1859, when it burnt down in a fire on west lake street.