459 
The results of our analysis are as follows: 
WTSI Ree SEES ee So St Cece OCSOCIOOE CoM BESOE COSCO DH Aata OSC On DCO Roce 9, 12 
EHD CHALLE AMO NLNIOMN) «oats ainiaies =o <2, ~ Se delguiemnelciocn wen eloajedciateiou'his 38. 00 
Mota Phosphorie geld ne ---- (2 sete = oa neecse wc GEE Coe EO eS COO ROD EE deCUSe 6. 09 
ESCH N SEN Teo eee ee A inte ale: 2a aim a keiiatel o = Se Saveiaictmnnja) aie siaieiunae Siz aie lebalojeie fosiereetd 0. 47 
Organic nitrogen, equivalent to 11. 15 per cent. potential ammonia. ............ 9,18 
Reh aC Lela aren ee een oa hela tats aterofs) ovata ia aive aveieiajalateice sa) Halle webs easermete 1, 69 
secGl een rains SB eR re ee Ge SOO POSS OCLC CEE IKE CO COO OD ICoCO Gsm — 1,18 
These figures undoubtedly place the material on a par with many of 
the concentrated fertilizers found in the markets, and should rouse suf- 
ficient interest and attention to secure for it an extensive application in 
southern agriculture. 
AMERICAN TANNING-MATERIALS.—Under this head, I propose to 
submit the results of the analyses of the vegetable substances contain- 
ing sufficient of tannic acid to make them of value for tanning that were 
collected and prepared for exhibition in the late International Exhibition 
in Philadelphia. The list may not comprise all the indigenous products 
that are of value in this respect, but some of them, at least, have not 
yet received extended application. 
The method employed in our estimations was devised by F, Jean, and 
published in the “ Bulletin de la Société Chimique de Paris,” (xxv, 511,) 
and depends upon the absorption of iodine by tannic acid. By this 
method, the quantity of tannic acid found in the various samples respect- 
ively was as follows: 
‘ Per cent, 
Greand sumac,| (oixed,)'from/Winchester, Va. 32.264 lee 00 sees. te deel eee 24.18 
mums) Cand counis,) Hallsberough, Vali ss15 3502s cae te UE 24. 08 
Humace (ens qupra:)Georvetown, D: Clio) 25 cots Pe ee Gs ee 26.1 
Leaves of sweet fern, (Comptonia asplenifolia,) from near Boston, Mass. -------- 9, 42 
Leaves of Polygonum amphibium, from Nebraska......-.--.----.----+---- See 11.6 
Ephedra antisyphilitica, from the table-lands of Arizona and Utah .--..:.--.-.-- Lag 
Bark of sweet-gum, (Liquidambar styraciflua,) from District of Columbia....-..-. 8. 36 
Bark of red-oak, (Quercus rubra,) from Canton, [ll ...-.....-.....--..--------- 5. 55 
Bark of white oak, ( Quercus alba,) from Canton, Il]......---..-.--..--.-.------- 7.85 
Crushed quercitron bark, (Quercus nigra,) from Winchester, Va.-.-.-.----------- 6, 47 
Dakar Quercus -coccumed, trom Canton, MIT. - Ji.) Sasee es os Oe Ra ae ae 7.78 
bark of Quercus macracarpa, trom Canton; Ul! S. 20 ote .e2- oe os Se eee se ose ee ees 7, 85 
Bark of hemlock, (Abies canadensis,) Van Ettenville, N. Y......---..----.------ 9.5 
AMERICAN WINES.—The collection referred to also contained a series 
of specimens of American wines, manufactured and contributed by 
Messrs. Bush & Son & Meissner, of Bushberg, Mo.; and, since the 
series embraced wines made from nearly all the varieties of grapes em- 
ployed in the manufacture of wine in this country, the results of their 
analyses are considered of some interest. The wines, being made by the 
same parties, are more likely to be subject to similar conditions in the 
process, and comparison between them is therefore more reliable. 
