144 REPORT OF THE COMMISSIONER OF- AGRICULTURE. 
ad THE COAL ECONOMIZER. 
_ This substance has been during the past winter widely advertised and 
abundantly used in the hope that at least some one of the many state- 
ments concerning it might be true, but in fact it is a downright swindle, 
and could only have succeeded through a general ignorance as to the 
nature of heat and combustion, and the universal desire to economize in 
the use of fuel. 
An analysis of the substance-shows it to be composed of— 
. * Per cent. 
WONNMONS Mbps se iwc aers sc bettas o(cluis oo civa cis Ua Dae ee eee eee esc coe cle eae 60. 09 
Gingbersalta(anhydrous)).ccccs +s. o2 0 -ccnean ete ceeeccepieoenaccccu cs coe 39. 45 
Carbonaceous matier:.:..22. 2.22.6 sacaieces woe eee e teen ee care ce eens cone ween Bia) 
100. 00 
It appears to be, and doubtless is, simply a crude salt cake, absolutely 
valueless for all the purposes for which it was sold, and costing at best 
possibly a cent a pound, but furnished at 25 cents per pound. 
That such an imposition could be possible is almost a disgrace to our 
intelligence, and that it is practiced upon a community should be made 
a criminal offense. 
SUBSTITUTE FOR PARIS GREEN. 
A specimen of “‘ London Purple,” a residue from the manufacture of 
aniline colors, received trom ———— ———, and which, it is said, may 
be sold at six cents per pound, was analyzed and found to contain: 
Per Cent. 
GSO Nie eelccaalavecowieceaias col cle as Soins de nace sees he S eee ee 12.46 
PRE OEE Gleb Gleeson! cisco rciniecioninemoe ines cesjevacianwiaseiane seen f 43.65 
TAT GY BEES SSeS SE oe ee a ee Sn Tre) ee 21.82 
nso lO resid Ole mocene onc chen abe eaviccucacetocee. cen. eee c cowacenere 14.57 
IEGMKOSIGOM. on = cabmiee acces cocu esc ecbiseneusceseceanssccee suse 1.16 
Waiters aca ac ce a aclesasaee saciasciejacws Quaercnes oskccs ceo eeee fete eee 2.27 
WOONSSaea ee csc orite co oclcuueccibe ced uhca cucu secees soSeus .couceee ee eae 4,07 
100.00 
As will be seen, this is mainly arseniate of lime, and the presence of 
this soluble and intense color would serve to show the presence of the 
poison wherever used, as well as to show the necessity of further appli- 
cation if washed away by rain. The low price would certainly warrant 
experiment to see whether it could not be substituted for Paris Green, 
now so generally used to destroy the Colorado Beetle which infests our 
potato fields. 
ANALYSES OF LIME, 
Six samples of lime, received from John H. Studer, Halltown, Jeffer- 
son County, West Virginia, were analyzed for the purpose of determin- 
ing their relative purity. The following are the analyses: 
= : 
Constituents No.1. | No.2. | No.3. | No.4. | No.5. | No.6. 
Per ct.| Per ct.| Per ct.| Per ct.| Per ct.| Per ct. 
TMG rape sos eae sea cs ada oo cocoa See esieedesaeeneee 74, 23 69.76 | 79.87 | 88.44 | 86.97 89. 93 
Magnesia ..----..---- at ih 2.44 | 12.12 . 66 - 51 3. 35 2.15 
Alpming and ironjoxde..<--- 2-2... ..s--sseqeneeets 1. 50 6. 44 2. 85 RK 
Rigaittis Nisoluplaess.c! os. s1-.-o-128 Jago Ae 3.93] 2.80] —.09 } 6,13) «4 5 ee 
Water and carboni¢ acid..--.......2.2.-...-5------- 17. 90 8.88 | 16.53 4. 92 5.13 2.15 
100. 100. 100. 100. 100. 100. 
