P’anous Notices. 
■32S 
Thus We may convert the one into the other with the greatest 
facility, but to such readers as are unacquainted with the algebraic 
expressions of arithmetical formulae, it will be necessary to express 
one or two of them in words, in order that their use may be un» 
derstood. First, then. To convert the degrees of Reamur’s into 
those of Fahrenheit’s ; Multiply the degree of Reamur by 9, di- 
vide the product by 4, and to the quotient add 32 ; the sum ex- 
presses the corresponding degree on the scale of Fahrenheit. Se- 
cond, To convert the degrees of Fahrenheit into those of Reamur s 
From the degrees of Fahrenheit subtract 32, multiply the remain- 
der by 4, and divide the product by 9, the quotient will be the de- 
gree according to the scale of Reamur. And so on for the rest. 
Pop,fiy Oil. Benni Seed. Ben JVut. At Harmony, half a day’s 
ride from Pittsburgh, (both places objects of very great interest) 
the settlers, use oil expressed from the poppy seed, exclusively, in 
lieu of olive oil for sallads, 8cc. It is nearly, if not quite equally good. 
This oil is becoming common in Europe as a substitute for olive 
oil. The poppy seed, may be eaten with impunity when ripe, 
I do not see why its use should be confined to the settlement of 
Harmony. The Ben, Bene, or Benni Seed common in the Caroli- 
nas, can furnish, as I am informed, oil enough to supply the United 
Sta tes at a cheap rate. I have eaten the oil of the Ben or Beheii 
nut in England, and I find no difference between it, and olive oil. 
Why should this last be imported ? But I doubt whether the Beu 
or Behen nut be the same with the Benni seed. I suspect this last 
to be the Sesamum ; but I have never seen it. The Behen nut,- 
Gians unguentarius^ Balenos murefisiki^ is the fruit of the Guilan^ 
dina Moringa. The oil is prepared in the Levant, in Egypt, in 
Syria, and in Italy, by expression. It is valuable for its purity, and 
its freedom from smell and taste, and for its property of remaining 
long without alteration or rancidity, which makes it extremely va- 
luable in pharmaceutical preparations. Rees’ Encyclopaedia. 
Madder.-^K few years ago, I procured from England, and 
I distributed in Philadelphia some plants of the Smyrna Madder’ 
f Lizari ) to Mr. Bern. McMahon, to Mr. J. Vaughan, to Mr. Jos. 
Clay, to Mr. Seth Craig. I know not what has been done with 
them, or whether any of the plants lived. I do not know a more 
valuable present that could be made to the cotton manufacture of 
this country. The Turkey red cannot be well dyed with the Dutch, 
Zealand, or Crop Madder. I mention this in conseCiUence of know- 
that the Harmony settlers, raise all their owci. madder, for 
