226 TWENTY-FIFTH ANNIVERSARY REPORT. 
was noticed that the amount of water-soluble arsenic grew less 
each year after the amendment of the law. 
We append the analysis of several special materials sold as in- 
secticides. 
ARSENOID. 
Total arsenic, equivalent to arsenious oxide..............ee. 58.82 per ct. 
Water-soluble arsenic, equivalent to arsenious oxide......... 2.94 per ct. 
Gopper, ‘equivalent “to “copper “oxide: s. i. nae ee oe eee 30.76 per ct. 
Moisture =." sscas neePick swe xc et ete c « ota eas ee Cee ee I.QI per ct. 
Arsénious Oxides, Anita ces Se ee ee ee 0.79 per ct. 
Copiper ‘Oxide*, Seaver. turtieee src ere em ae ee ee O.4I per ct. 
sulphate “of “lime o(vypsiiti).. + cade aston See eee eee ee 45.34 per ct. 
Magnesium, oxide Siitty dais toe Bo on ake oe ee eee eee 3.98 per ct. 
Tron ands aluminum Voxtdes 5 oso oe arene ei eee eee eae 3.02 per ct. 
Silica ys ses oink ated ae ae ee ee ee ie es 5-42 per ct. 
LOSS: 7ONGISNITION cc. ny ates s ook eae Be RR EL See 28.91 per ct. 
Moisture fer So genie Peete ee os SON wr ee tere Re eee a eee 9.78 per ct. 
ZinCs OXIde Se ele vet dacctaly feehte oer et ELA Te Oe ae 86.80 per ct. 
Tron 6xide sch. Sie. 5 sare ao be OA Pe Th PO Ce ee 5.20 perct. 
Lead oxides ¢ Posts cates ae oe at a ee nee 2.01 per ct. 
NU ICA > tees ibe at Sek ae ee eS NL ate ee ORs SU her nae ae 2.96 per ct. 
LOSs Son signition ms ee eee a ee eee Cie ae ere Teae ne 2.43 per ct. 
Phosphoric Sacid (oes coe te thts na ele eee een fen cornea es 0.03 per ct. 
Nitrogen eo ic So RAAT Pree Ce ce Cane eee Ieee ee 0.04 per ct. 
POtashts eran te eee a ies Oe en ie oa aw ees ain ee ee ee 0.00 per ct. 
Some claims are made for this material as a fertilizer but the 
claims are not supported by the analysis. 
ENGLISH Buc COMPOUND. 
A rsenious: soxide «St See e oa ee alam Sutera cn eaten a Sauk. tO: DEG Ct: 
Copper-oxitle acc ora ce no Ra sweden Sct ic EE ee thine Aa as 0.60 per ct. 
HamMmonp’s Stuc SHOT. 
Sulphaterot- lanet*(eypsund ware ceern in a eine ee. a aie 74.72 per ct. 
Arsenio. 4 Oxi Gb: fa persis ier a de < Ve awe tamenates ore 1.04 per ct. 
GOppet PO Rid ete ee ee eae IS a ch ids no ene RE oe 0.59 per ct. 
Tron, “alumintinic silicone oxides. Cte ou <q tah ee ee oe 6.92 per ct. 
Wloistire 2 2 Ghee cen geen OE RRA a e+ a ih ate, Serta ec ore 10.88 per ct. 
Arsenidus ..oxide (\ fan te aie aes ., Bare oe ieee ns 4.85 per ct. 
Coppers oxides :225%:, Cie cutee 28 ny ee er ee oe ee ee 12.68 per ct. 
This contains also large amounts of carbonate and hydrate of lime. 
