5^ ART OF "WdlTING IN THE DARK. 



of a compartme^it in the frame. One end of this pen is cut 

 away parallel to one of its fides, fo as to form a plate three 

 eights of an inch long and a line in thicknefs : the end of the 

 plate is alfo filed down fo as to leave at one corner a pointy, 

 which is parallel to the axis of tiie rod : this point is ufed in 

 making dots. The other end of the rod is cut diagonally pa- 

 rallel to its axis, thereby forming a prifm, the end of which is 

 an ifoceles triangle. The extremity of this prifm is alfo cut 

 away, fo as to leave a plate lying in the fame plane with that 

 defcribed above: the end of this plane has a fmall bevil exter- 

 nally, which gives it the edge of a chiflel; and it is ufed in 

 making ftrokes. The writing frame always refts on that part 

 of the page, which you are going to write upon; and the fides 

 of the compartments together with their angles guide the pen 

 to the proper places: the method of ufing which will eafily 

 ooeiiif to thofe who are acquainted with the alphabet and ap- 

 paratus, 

 Igfe, They fliould however be informed that printer's^ink, hfH- 



teft for the purpofe : it is fp read upon a cufliion of foft leather, 

 which muft be touched by the pen, as oft as it is applied tQ 

 , tfeepsper. -^ ^^^■''^^^' ' ' ''] ih^lni^t^n^ 



JOHN GOlJGEf;- 



mddleJhaiv/Dec.15, 1803. 



(See alphabet, next page,) 



"3P. .Si 'A paper of inine Was read Nov. 4tb before the Man- 

 chefter Society, in which I endeavour to deraonftrate Mr, 

 Dalton's doctrine of mixed gafes to be repugnant to the me- 

 chanical philofophy. It alfo proves experimentally that water 

 augments the bulk of air of a given temperature without the 

 ifitervention of a ftopple of mercury; from which the non- 

 exiftence of an aqueous atmofphere is inferred upon known 

 principles. 



ALPHABET. 



