On Bread made from Wheat Flour and Potatoes. 265 



nineteen decrees southward in the meridian." The dip of 

 the magnetic needle being about 72 degrees, the southern 

 end would constquenlly be inclined from the zenith 13 

 degrees. 



This very near coincidence of situation as to altitude 

 seems in some degree to strengthen Dalton's idea. What 

 the horizontal position of the needle was in the year 17.iO, 

 I do not know ; but the expression " in the meridian" niav 

 not mean exactly so. I do not mean to offer an opinion 

 on the connection between electricity and magnetism, but 

 much wish for accurate statements of facts respecting 

 the aurora. It is much to be wished that journals of the 

 variation or declination of the magnetic needle were kept 

 in various places, and transmitted to some periodical publi- 

 cation. 1 he subject of magnetism is not in my opinion 

 sufficiently attended to by philosophers. A good variation 

 needle, as it is called, is not, I believe, a very expensive in- 

 strument, and might no doubt in many places be fixed to- 

 lerably secure from being shaken. Might not a dipping 

 wefc^/i? be constructed also, at a moderate expense, sulliciently 

 exact for general use ? 



Would not the terms horizontal magnetic needle and 

 vertical magnetic needle be preferable to variation and 

 dipping needle P When the situation (or direction) of the 

 magnetic needle is spoken of, the expression should in- 

 clude both the horizontal and vertical situation, that is, the 

 azimuth ; and depression, if we speak of the northern end, 

 jn these parts of the world. 



I remain, Sec. 



March 18, 1813. B. M. FoRSTER. 



XLII. On Bread made from a Mixture of Wheat Flour 

 and Potatoes. By H, B. Way, Esq. of Bridport Har^ 

 hour*. 



Sir, — 1 HAVE sent to the Society of Arts, &c. a loaf of 

 bread made from a nfixiure of wheal flour and potatoes. 

 The principle I have adopted from a publication of Edlin's, 

 and I have now got it in such perfection, that I and my 

 family prefer it to bread made wholly of wheat flour. It 

 has the valuable property of keeping many days longer iu 



• Vrom TTumarlions c)f the Sorii/i/ fur the Encouragcmeiit nf Arts, Manu- 



factaies, and C'lm merer, for 18i!2. 'I'he thanks of the Society wfre votfd 



to Mr. W. for this communication, and for some excellent bread which he 

 furnithcd lo the Society, made from a mixture ofWheat Flour and Potatoej. 



a moist 



