»74 



THE ALUMNI JOURNAL. 



Jiinger and Klages (idem 314) have 

 transformed raenthoneinto 3-chlorcymene 

 and have thereby furnished experimental 

 evidence of the correctness of the men- 

 thol formula : — 



H 



CH, 



C 



H,C 



H,Cl 



/ \ 



CH, 



\ 



,0H 



H 



H- 



C 



^C.H, 



They accomplish this in the following 

 manner : — The oxygen atom of men- 

 thone was first displaced by CL, the 

 dichlorhexahydrocymene eliminates CI 

 H, leaving a tetrahydrochlorcymene ; 

 from this are successively formed by the 

 action of bromine and of chinoline 3-di- 

 hydrochlorcymene and finally 3-chlorcy- 



mene. 



CH3 



I 

 C 



/\ 

 HC/ \CH 



Hd 



c 



C3H, 



/ 



CCl 



A CUSTOMER at a down town store presented 

 a four ounce bottle and called for five cents' 

 worth of ammonia. The bottle bore the follow- 

 ing labels : 



Water of ammonia, J. N. Hegeman & Co., 

 N. Y ; aq. ammonia, S. Choonmaker, N. Y.; 

 spt. ammonia, Bigelow, N. Y. ; liquid ammo- 

 nia, Rome ; salmiakgrist, Ziirich ; liquid am- 

 monia, or spts. hartshorn, Edinburgh; salmiak- 

 grist, Stutgart; salmiakspiritus, Trondhjen. 



Proximate Analysis of Pol^'GAla 

 Senkga. — Schroeder has obtained 1.12 

 percent, of volatile oil, 5.5 per cent, of 

 fixed oil, 2.14 per cent, of an ether-solu- 

 ble resin, 2.76 per cent, of glucose, 5.82 

 per cent, of saccharose, 5.98 per cent, of 

 impure polygalic acid and resin, i 95 per 

 cent, of mucilage, 4.07 per cent, of a sap- 

 onin containing extractive, 18.4 percent, 

 of pectin and albuminoids, and various 

 minor proximate principles. The large 

 proportion of albuminoid matter contain- 

 ed in senega root is probably intended to 

 serve as a reserve food product for the 

 plant. It contains neither starch nor 

 inulin. Triosteum Perfoliatum tinker's 

 weed has been found as an adulterant of 

 senega. 



CiTRONELLAiy. — Tiemann and Schmidt 

 publish an exhaustive account of the 

 chemistry of the citronellal series, upon 

 which they have been at work for some 

 time. Citronellal, an aldehyde occuring 

 in various ethereal oils (such as citronel- 

 la, some varieties of eucalyptus, &c.), 

 possesses the constitution — 



CH3.C(CH3): CH CH, CH,.CH(CH3). 

 CHj.COH. 



It is easy to obtain by recrystallization 

 of the double sodium bi sulphite com- 

 pound. It boils at 205° — 206° and its 

 specific gravity at 17.5° is .8538 ; rotary 

 power [a]d = 12°. 30 ; refractive index, 

 1.448 1. Citronellic acid, prepared by 

 oxidation of the aldehyde by moist silver 

 oxide boils at 257°. The aldehyde is re- 

 duced by sodium and acetic acid to the 

 corresponding alcohol, citronellol, adex- 

 trorotary body. The authors consider 

 that the alcohols of Turkish rose oil are 

 only geraniol, and a second one, which 

 they look upon as the optically active 

 isomer of d-citronellol, and therefore 

 term it 1-citronellol. Spanish geranium 

 oil contains geraniol and d- and 1-citron- 

 ellol, as does also African geranium oil. 

 — Berichte. 



