W) 



niCTIllMAKY or TIIK ACTIVE riSINtllM.I 



Reactions : 



Alkaline hydrates dissolve. 

 Precipitated by ionic lead acetate. 

 [Not by neutral lead acetate.] 



§liii;i SAXIFRAGA Siberica and S. crassif olia ; Saxifragacptc. In- 

 vestigators : (iarreau and JMachelart. 



BERGENIN G., V C.idst )4 (Uarreau and Maohelart) ; crystalline, bitter. 

 Soluble in alcohol and water. 

 Fehling's solution, reduced. 



§2(14. SCILLA luaritima, or Urginea Scilla (Squills) ; Liliacecv. Sub- 

 stance (o), Jarmerstedt, Ai-fh. c.qi. PulhoL, 11,2'2; {b), (c), (rf), Merck, 

 Pliant,. Zl., IST'.I, and others. 



(ii) SCILLAW G. (Jarraerstedt's) ; nitrogen free, amorphous, bitter, 

 IKii.snnoiis. Resolved by acids into sugar and a rcsiu. 



Soluble in alcohol ; with difficulty in water, ether, or chloroform. 



[Not precipitated by basic lead acetate.] 



Tannic acid precipitates. 



Colour tests : 



Concentrated sulphuric acid, brown, with green fluorescence. 

 ,, „ „ with bromine, bluish-red. 



., hydrochloric acid, red, with gradual greenish pp. 



(/<) SCILLIN B. (not Riche and Rcmond's Scillin, which is a carbo- 

 hydrate); light yellow, crystalline. 



Soluble in alcohol and hot ether, with difficulty in water. 

 Concentrated sulphuric acid, reddish-brown. 



,, nitric acid, yellow changing to green. 



(<•) SCILUPICRIN B. ; yellow, amorphou-', hygroscopic, bitter. 

 Soluble in water. 



((/) SCILLITOXIN: brown, amorphous. 

 Soluble iu alcohol. Insoluble in water or ether. 

 Concentrated sulphuric acid, red changing to brown. 



,, nitric acid, yellow, changing to green on warming. 



§ -IQU. SCROPHULARIA aquatica, Z., andS. nodosa; Kn-ophuhiriaceir. 

 Investigator : Walz, ./ti/irl). Pliarm., 26, 'iHG. 

 SCROPHULARIN B. ; crystalline, bitter. 

 Reactions : 



[Xo pp. lead acetate, neutral or basic] 

 Tannic acid, pp. 



S 20(1. SIMABA cedron ; Siinai-nhnnr. The seed, substance (a). 

 Investigator : Lewy, Jotirn. Cliiiii. MiiL, l«yl, 282. Used against snake- 

 bites. 8. Waldivia (distinct from preceding), substance (6), from the 

 fruit (Ch. Tanret, Oimjit. Rendu, 91,HXf<). 



{a) CEDRINE (A. V), (Valdivin V, Tanret); glittering needles, neutral, 

 bitter, emetic. Forms fluorescent compounds. 



Soluble in water, alcohol and ether. 



Precipitated l)y tannic acid and by most alkaloid reagents (C. Tanret). 



(h) VALDIVIN G. (?), C:„|H480,„+5H,Oor C„H,40,„+.".H„0 ; crystallizes 

 in hexagonal prisms; M.P. 2.^11', non-volatile; sp. gr. l-4(i; bitter. 

 Forms compounds showing a magnificent fluorescence. Uptically in- 

 active. 



Soluble in 01)0 parts cold water (frothy solution), 3H boiling, lilU abso- 

 lute alcohol, or fiO spirit of 70 per cent., easily in chloroform ; not in 

 ether. 



Removed from aqueous solution by chloroform. 



[Not precipitated by neutral or basic lead acetate.] 



Ammoniac il lead acetate ) 



Tannic acid ) "' ' 



Fehling's solution, reduced after treatment with alkalies (acids?). 



Concentrated sulphuric acid ) j- , . ■ 



TVTi ■ J I dissolve colourless. 



Nitric acid j 



Acids in general increase the solubility in water. 



§ 207. SINAPIS alba (White Mustard) ; Cnirit^nv : substances («), (/.). 

 Will and Laulxnheimer, .4/(«. Chein. Pharin., 199, l.'iO. S. nigra (Black 

 Mustard), sub.stance {(■) ; Turritis glabra, {h) ; Brassica rapa, (c,. 



(a) SINALBIN G., C3oH44N.,S.U,s ; crystallizes in needles; ooly faint 

 yellow unless impure ; fusible. Decomposed by Myrosin (feraient of 

 mustard) into glucose, Sinapine sulphate, and Siualbyl thiocyanide, 

 C.HyONCS. 



Soluble in water, in 33 parts boiling 8(3 per cent, alcohol ; not in cold 

 absolute alcohol, ether, or carbon bisulphide. 



Reactions : 



Alkaliue hydrates) J. , ,, 



, •' dissolve yellow. 



Ammonia i ■' ^ 



[Xo pp. barium chloride until after decamposition.] 



Alkaliue earths dissolve, the yellow coloration being perceptible even 



with traces only. 



