i i i i 
Tanre I.—Exhibiting a list of all the known dimorphous bodies, and the observed differences in the physical properties of the two forms of each substance. 1837. Seventh Report of British pena = 
eventh Report of Britis! tion, to. 
7 
Symbol or Formula. Crystalline Form. Form occurs. ‘How obtained, or where. Density. Hardness. Relations to Light. Relations. 
7 ‘Opake or transparent. (eine Tanaes yaipoweri| Wo ioataliys EE Solubility in 100 pls. of Water, Characteristic or Remarks, ‘Authorities. : 
|. Elementary Bodies peta j 
Salphur, 5 Rt. Rh. Pr. M on M 10159 Haid. Native and from solution of S in CS, ... 205001 Kr) 15 to 2:5 | i i 
4 } Oblique Rh. Pr. of 90° 327. By fusing A .. 7] Same erystal fused 1-9889 ||? 2 Dose tasentie Gaal Seen rellow: Het 2:115 Br,||Non-conduct, 9 
Carbon,. Reg. Octohedron. «...s Native in diamon 35 to 3:55 10:0 | Transparent .. Q Prot WEEE EME | fy »| Mittcherlich, Pog. tm. vii. p. S28. 
| P sevneeees Adamantine 2-487 Br.| Nou-conduct, ) i couldaredly howe ahamise tales taRATpaS al Tat ST oe EDL 
ae he ; the particles are minutely divided and separat fall (HS UbaerTS 
In ee EMRE omy ssssesssrsssens] DO. in graphite, occurs in ironfurnaces| 2°3285 Kr. 2/0891 H. |'1- to2- | Opakeortranslucent ...| Black by reflected...| Metallic ssssssss++-.+s Berdiival| Conductor a differences. ee ara eden rugcoon call Leo aeae oo 
SS i | |. Pr. . I fer blithe) Do. “ony ? 2 Do, Do. is 
Disulphuret of Copper, Cu or Cuy$ hey pase Tespettaledstieys th aie Coppers, Found xativs _ oF 25103: | Opake.. Les 2 0 According to Brooke the fibrous red oxide of Cornvall is only an aggregation of cubes Suckow, Pog. An., 1835, p. 528. 
BI} RAD EEOn . y ? - Do. 5 Sapte ce 
Sulphuret of Silver, ‘ Cube in Silver glance. Found native 5 . 4 3 0 
‘Ag or Ags § 7196 2 to.25 | Do. , iB ft 
— i } BS or Ag,S Rhombeid 5 Do. in AgS+CugS from Riidelstadt ? > Do. De " ie wipe Hoe Gvslah te 8% 
3 Mn $ Rhomboid Nore in Earope HOU BES lds Steel grey F Th ‘| hid? p. 187; ander, Poy.dn,xL.p-313, 
: t eee 0. in Mexico 2 ? Do. jave inserted thisasdimorphous on the auth: l nds 
| pes FeS. Cubes. . saesnetan Do. in iron pyrites 4-6 to 5032 6 to 65 | Do. Bruss yellow .....-...| Metallic Del Rio, Silliman, xxx. p. 386. 
| : . ; 2 Rt. Rh. R, Mon M/ 106° 2 Do. in white do... 4678 Do, | Do. .| Pale whitish yellow 
Biniodide of Merc } Nl; " poled ae aaa re Someone eee solution of HgI, in KI 4 5°2009 Kr. ? ‘Transparent Red. . ai an B generally undergoes more rapid decomposition in the air than A, 
ee - PU dL Neat J. R seseereeese teen ? 2 i ins i ° ‘ = 
li arnccareniess nate a Ch P. eines B acai : j Do. Yellow 5 ¢ yellow sometimes retains its form at 60° F,, but a touch suflices to set the particles in motion.) Mitscherlich, Pog. du., xxviii. p. 116. 
HgCl, i 7 ? ‘These two fi i i i i 
: B i Octohed. with rect. base By sublimation ssessssssseees 54032 Kr.|| 2 | Do. ate 0 They, have nulreifou vt forza Cte Duets a cia 
| Arsenious acid, Reg. octohedrons Commonly .. Do. and occurs nativ Native 3698 RD) > Cryst. t nas op.3| itsenentines -| At 60° 5pts. 212° 50: : 
; As,0, Ren, P: - a v ‘Tryst. transp., mass op. ? 0 Adamantine 60° 1-25 212° 11°50 Gui. 5 4 r, a 
ese ‘ t Rh. Proves os Rarely..... Occurred in a smelting furnace (Wahiler}| Glacial 3699 1. 3-729 Hr. ? Transparent like glass* 0 Splendent, glassy HBC ep 50 Gi) Solution of opake mass in ELC] eruita no light on cooling’ slowhy/ and cryutallsng issscsteirsse||Ht Rose; Pog. dm xxv p41. 
ee) BN sa 3 ead ; i a ,| At 0°96 212°97 Gui. | Solution of glassy mass gives out much light on crystalliaing; the crystals are octohedrons,/ 
ide of Antimon: 4 } Sh,0, vey en pais ce Generally et Native’ in\ vit antimon: 366 25 to 30 Translucent al 0 Adarantine G and in mass opake, The glassy acid is therefore either the form B or in a third state Wohler, An, de Chem., li. p. 201, 
| 111. Compounds of 3 Elements ae y oF ° 4 pe () 0 bined icant tetas scossssssssnsens} Wahler, Ibid. 
| “Carbonate of Lime, GeO. Rhomb. of 105° 4” M... Abundantly ........1+.| Native in eale spar... 2716 R. 2721 M, 3:0 | Do. 0 : e i ¢ i 
1s Rt. Rh. Pr, of 116° 16 3] Leas commonly. Do. invarragonite.... 2949 R 3°5\to.4-0'| Do. ° .| No action at red heat, sp. heat = 0:2046 N,] 0 Form and action of heat. CaG thrown down from cold solutions is calc spar, from hot onite,| Rose, Pog. dn., xiii. p. 366, 
: : . Decrepitates at do,, ‘sp. heat = 0-2018 NV, 0 Do.cxhibits anomalous epoptical figures; on decropitation assumos the form nnd density of calc spar) Erman, Berlin ‘Trans’ 1832, p. 1. 
Carbonate of Magnesia, | Rhomb. of 106° 15" ..... Abundantly Native in bitter spar... 2384 Sito Hell | Semltransparent er 0 vio i I P y P hi 1 1832, p. 1. 
Mg0+C0, { é ; 1 pearly, Jeceveccareeesaeee 0 When the solution in C is evaporated to dryness the arragonitic crystals are obtained mixed with| 
| Rt Rh. Pri... Rarely... Evaporating a solution of MgC in C.. 2 2 Do 4 0 > { fs , 
|. Sarbanes stem, Fe0-+C0, Te ett Commonly « Nativein brown sar 36to3:829 | 35 to 45 | Opake Yellow-brown ......| Vitreous, pearly. 4 eA en Hie accra icles 
—-.. . Rh. Pr. 108° 26%, jo. in junckerite 3815 4 | Do. . i neat ; ; i 
| ese ares Rhomboid 104° 634°? Dest tutta cleite 5 u Phe inurae eer 0 The dimensions of the prisms of junckerite aro unfortunately left in doubt ..... sso] Dufrenoy, An. de Chim. et de Phys.) 
———— b0+CO, Rt. Rh. Pr. of 117° 14’, Ku Do. in white lead spar 6-465 3:0 to 3'5 | Do, 0 4 i MEO MS HELS ‘ 
FUE Pe Goa IT Tesiie chee See re & mee a 0 The faces of the plumbocaleite are gencrally rounded. It occurs at Wanlockhead, Scotland... Johnston, Brewster's Jour., vi. p. 79- 
KO4NO, Kr: At 60°F. 14°3. 212°F, 100...| Crystals permanent. A drop of a sat, sol. gives on evap. prism eryst, and rhomb, tables of 102° 50’, 
| : Rhomboid of 106'36, Fm. By evaporation in small quantity 2 2 Do. 0 at ETA which change their form when rul pressed, or touched with a prismatic crystal ee Rk Inst. ye S 
| ORR. wa 3 eae : ; beeen eae fore soluble than A....« Frankenheim, Pag. dn., xl. p. 447. 
|. } PhO-+-Cr0, ook Say st v , 004 25 to 3 Remar legal red. Vesta 9 Brooke, Johnston, London ‘and Edin} 
J ? ? n . ae il. Mag, May 1838. 
, Rt. Rh. Pr. M on M/ 91° 10/ Bi By evaporation at common temperatures| 2 ? o| | COXOOU suseccesveseonenc|Suneenndexsuieyeesteneetees |i i i 
| NiO+S0,+7HO Square prim Exposing A to the sun's rays or crystal ; 5 De. asasasaosensuacssasess crsssnrersrsessene] At 60° 33 pts sevssssrseneeesses Mitscherlich. 
ll Seiectsterce's lizing from warm or acid solutions... - 
| Sees tes cecal] mots. |HREm Ee eres eon See : eal a : 8 
Bisulphate of Potash, i ; Vase > ‘ ‘| 0 d, 
| 2 2 . : Rhombie octohed. (form of sulphur) Mf BYEXSDOMALONIS sectstee : 2 2 Do. 0 "| At 219° 200 pts srsscssessessss{f have inserted this substance on the authority quoted, No mention is there made of a difference in| Mitscherlich, Pog. dn., xxix. 198. 
| KO+S0,+HO+S0, 1 : i i Xraberiittelse, 1837, p. 12 b jeudant iv.7 
| oa Ob. Rh. Pr. (form of Felspar) M. By fusing A A aa > ? Do. 0 R the quantity of waterin the fused salt, which Berg. Ars! heriittelse, , p-126, states to be the case| wisest ie \t Chim. Phys. iv. 72 
} NaO0+P30;+4HO Rt. Rh. Pr. of Mon M’ 93° 54°. By spontaneous evaporation... ? 2 Do. 0 Largely ROILHTe Do. 
or NallaP-+2H LDo. of 78° 30 Rarer Do. ? 2 Do 0 
a b & Sesaurecotenearisasi} DOi ? 2 b bereooreitrebovenctrncet pon eeepc Do. ai invasecttne Tone ereerrorenn Do. 
Ca. 8} AL rn | = < 5 5 
| Ca,Si¢-* Le Reg. dodecahedron ssceesseeseersesesees » | COMMONLY vssereeeereeees! Found native s.-seeceesseee roe red 36 to 42 6°5 to 7’5 | Transp. &translucent | Yel.-brown, bl., gros- Vit, TESIMOUS sssssesselscrssseerrceererersas|terserserersennsss| Before blow-pipe melts quietly 0 Garnet after fusion is probably prismatic. Magnus found that grossulaire (sp. gr. —) and the 4 = 
= . penne m ay A f a slain ereenaliye! a ¥ greenish yel. vesuvian from Baikal (sp. gr. —) had both the same sp. gr. (—) after being melted| Magnus, Poggendorff, xxvi. p. 489. 
| GBersistOases on) an quare pi oo 0. 0. B to 34 5 10. ++ Do, p Swells up with evolution of bubbles, K.... 0 »+:| Kobell (Berz. Arsb. 1829, p. 201.) 
| . tt }co, aplie joo, Heise Rh. prism... ese Do. Do. 3646 J. 40 0 Vitreo-resinous Decrepitates rere 0 eee Brooke, Children. 
. s Right Rh. prism Gorm of arragonite) ..,| Do. Do. 37 J. Scratches A\ ak a Do. ‘ Do. much 0 ‘Thomsondescribes Miller, ohnston, Pail Mag. sare 
Sulp) ote “ Acute rhomboii . r F fe ‘ lative, brown, Brooke, Encyclop. Metropolitan. 
ulphato Tricarbonate of Lead...) PLS 3PHC REE }) Brooke srs reeesern] Found mative at Lea ills senssnnae 63 25 ret 0 ee ae NT eeAoES EOL a 
W., Wollaston; Fm., Frankenheim ; R., Rose. 
* It is not certain that the glassy arsenious acid lias the form assigned to it, but if not there must be three varieties or modifications of this compound. + Haidinger says an oblique rhombic prism, which, according to the subsequent measurement of Brooke, is incorrect. Bk., Brooke; Br., Brewster; H:, Haiiy; Gui, Guibourt; Hr., Herapath; K.,Kobell; Ku. Kupfer; Kr., Karsten; Le. Levy; M, Mitscherlich, N,, Neumann; R. D., Roger and Dumas; Sk., Suckow ; 
