COLLKCTIONS IN KCONOMIC f;i.n|,()(;v A\I» M K lA I.I.rHOV. 2^)!} 



(17) Luliricatiii;; oil. spi'cilic fjr.ivity 1;") ' bwlow zoro 'Jl^' liitiiiin- ; lin< ti-Ht 2M'^ F. 

 (5t»7(>6. ) 



(Irt) LiibriiMtiii;; oil. sp^citio Kf'^vity 27° liatiim-. {.'/JTOT. » 



(19) Liibric.it iii}j oil, specilin >;r.ivity 'J'.* Hamin>; lini fi'-il '^T.'i 1'.; cold ti-nt zero. 

 (WJTOH. ) 



(•20) Luliricatiii;: oil, Miu'cilic jjmvily 2U-' Hiimiir-; cold test !i.'i<^ F. (7>'J7m.) 



(21) Liiliriciitin;: oil, npi«cifi(r jjravity 28 Haiimc : (irt> test :V2r> F. ; cold toHt JO-" 

 F. (r>l»710.)» 



The sopanitioii mid pivpanitiun of puiiilliii is iliiistratcMl i)y: 



(1) Gum wax, li;,'lit l)ro\vu. (fiiMi:?!. ) 



(2) I'nwscd oii.daik j^ii'tMiish ; .spciM lie gravity 2.'> liaiiiiii'-. (.'>! Hi; >.').) 



(3) Paradiii oil, ticatod aiiilicr ; sptici lie gravity 2.') HaiiiiK^. (.'('.ItiiW;. ) 

 (1) Crinlc wax, black, slack prcssiMl ; chill test 102-' F. (.'»1M]:57.) 



(r>) Cnido wax, treated aiiil>er; chill test 108^ F. (iVJtWS. ) 



(6) Treated wax, hy<lraiilic pressed; chill test 129' F. (oiltilVJ.) 



(7) Refined wax, white; chill test 14.'. ' F. (.VJiMO.) 



The following specimens represent various solids obtained : 



(1) Petroleum pitch, black ; ineltiiif; point 11">' F. (.'>9712.) 



(2) Va.sdine or petroleum salve. (597i:i. ) 

 (-.i) Petroleum Jelly. (59714.) 



(4) Carboline or liair-oil. (o97l5. ) 



(5) Journal ;;rease, black ; melting point dO"^ F. (.')9716.) 

 ((>) Wa;;oii j^rease, nudtinj: i»oiut 120'-' F. (.')9717.) 



(7) Hot neck mill -grease, meltiufr P'>int 140^ F. (.•>9718.) 

 (M) Cold neck mill ijrea.sc, melting' point llOO F. (.'.9719.) 

 (9) Tar coke, carbon. ((i9ti4:5. ) 

 (10) Electric liffht carbon point.s, maile from tar coke. (.')9(i44.) 



In this connection three specimens are shown to illustrate reduced oils, 

 which are lubricating oils prepared by the slow evaporation at compar- 

 atively low temperatures of the volatile constirueiits of .special crude 

 petroleums : 



(1) Reduced oil, for lubricating; j.urposes. dark j^reenish n d ; spe<'ilic gravitv38° 

 Baum<«. (.59«W7.) 



(2) Reduced oil, for lubricating' i.urposcs. dirk •rrei-nisli red: spei-ifn ;;ravity :16° 

 Banm<5. ('.9r.H^. ) 



(3) Reduced oil, dark frreenish hmI : .si.ecifu- ;,'ravity M Haumc^^ ('.9689.) 



GASEOUS inn MKN. 



NATtKAI. »;AS. 



(Composition : Very variable. Tlie following six analy.scsof .s;im|»Ies 

 taken from the same well .show wide \ ;ii i;it inn : 



Marsh ea** ..". .17. 8.S 7.'.. 16 72.18 



nyilroj;i<ii 



Etlivlichv.lri.l.i .,. -0 |. ro ;!.r,i) 



Ol.'llmit t'lm O.HO 60 0.70 



♦'"^yK"" '.'.in \ -JO 1.10 



CarlHinie oxi<if I n,, ,, ,, | qq 



('arl.nnic acid .i.in n ,, ho 



Nitrogen 23,41 



40.58 

 2". 02 26.16 29.0.1 .15.92 



12 SO 

 0.60 

 80 

 40 

 0.40 

 0.00 



