Arts and sciences; chemistry.

drying Oil which may be bought in the Shops ready prepared - which will save a great deal of trouble -

Composition of the Black Tincture [?] take umber [?]. Cut it small put it into a pipkin on a brisk fire roast it as you do Coffee for 3/4 of an hour grind it very fine and mix it as the painters do with a little drying oil set it apart in an Earthen pot wel [sic] covered -

Secondly Take 4 [?] verdigrease [?] very fine powder mix it with the oil as before and put it to the umber

Thirdly take lamp black 1 to 4 oz mix it with the Oil as before put it to the rest of the ingredients

You use this Composition to dye hats, cloth. Leather in regard to Leather it is necessary before you put on

32 on this Composition to lay on one two to six layers of drying oil letting each layer dry before you put on another to get the better of the grease wax on [drain?] oil that may be in it and that the tincture may lay the better this precaution is also necessary for soft Boots upon which you must lay on the Black tincture and two layers of varnish over it

Preparation of the Varnish Rx Prussian blue [?] Fine red Indigo [?] Powder these apart & mix them with a little drying Oil, or [Resin?] [water?], & put them in separate Pots [?] Rx Gum Copal [??] Nut oil prepared as the drying oil [?] [Resin water?] [?] Put the Copal [coarsly?] bruised into with a [?] a Vial upon a brisk Fire [without?] [?]

The French call it Indigo [curree?] a Gorge de Pigeon Eau de Resine et [elfevel of turpentine?]

33 shaking it frequently fo facilitate the melting & let all the heterogenous vapors which will [come?] when it is melted - Then pour upon it gently {^by little & little} the prepared nut oil warmed, shaking it well between every [?] over the Fire to encorporate it well. Then pour on in the same manner the Resin Water pour it off & let it grow cold. When you use it, put a little of it at a time, to equal parts of the Prussian Blue & Indigo, [mixing?] them well toghether & it makes the [fine?] Vermillion for the [?]

43 The [?] of the Pozzolene [sic] Earth to make a durable Cement from Mr Dunham of Civila vecchia [communicated?] 11 Jan. 1775

Copy of a Letter A great deal of our Pozzolene Earth is every Year sent from hence to Dover, where I find they spend a great deal of Money to grind it down & refine it before they venture

34 to mix it with [?], which is all a [Farce?] & quite a useless [?] If the Lime be good, they should mix it with 2/3 of Pozzolene Earth without refining or grinding ir at all & so beat up the [?] as usual, mixing only a [?] [?] of Water. This makes a Cement as hard as a solid Rock & will last under water to the End of the [?] You may even build with it under water & it immediately cements. It should always be 2/3 of Puzzolena [sic] to 1/3 of good Lime, but [?] thus made must be used immediately, otherwise it is no longer good, for wh Reason no more should be mixd up at once that what can be consumed in building in the [?] few Hours.

[???] [???] March 1796

35 44 Brunswick Soap Major Ward [?] July [1781?]

Rx best soft sope [sic] [?] Sperma Cete [?] Camphire [?] Sallad [sic] Oil 3 Spoonfulls. Put them in a well season'd Pipkin, over a slow Fire till all is dissolved, stirring it well all the Time, adding about a Spoonful of water. lye. The same as Naples Soap a Piece as big as a large Pea to shave with.

45. A Ball which takes Fire by Moisture [?] Fludd—[Lod Stone?] Rx [Calamine?] ttÿ— [Asphalt?] [in?] Nitre aa Züÿ—Sulphur [wire?] [Ziÿ?] Liquid Varnish [?] Mix well & make a Ball which roll in Quick Lime