1S92.] 



NEW YORK ACADEMY OF SCIENCES. 



in 



H 

 C 



H— C 

 H— C 



C 



H 



\ /\ 



C 



H H 



CioHg Naphthalene of coal-tar. 



H 



H 



C 



^C— H H— C 

 .C— H H— C 



C 



H 



C 



o 



C N 



I 

 H 



CgHjN Chinollne of Skraup. 



Ic— H 



H— C| 



H— c! 



C 



c 



c 



c 



\ 



N- 



c 



H„ 



CH, 



N— CH, 



H 



CnHi2N20 Dimethyloxyquinazine = Antipyrine. 



Thermifugin is another of these compounds. Hypnal is a com- 

 pound of antipyrine with chloral. Salipyrine is a compound of 

 antipyrine and salicylic acid. lodol, a substitute for iodoform, is a 

 pyrrol compound, one of the cousins of chinoline and pyridine. 



The wonderful results obtained in the use of the chinoline and 

 pyridine compounds stimulated experiments on other organic bodies 

 made in the chemical laboratory by building up or synthesis. 



I can only mention some of these by name. Among hypnotics 

 and anaesthetics we have — 



Methylal. 

 Amylene hydrate. 

 Para aldelivde. 



Urethane. 



Sulphonal. 



Di and tri chlor methane. 



Then we have a series of antiseptics allied to carbolic acid. These 

 include — 



Alpha-naphthol from naphthalene. 



Beta- 



Tribromphenol or bromol. 



Phenyl salicylate or salol. 



Another series includes bodies allied to aniline, the substance that 



Beta-naphthyl salicylate or Betol. 

 Aseptol-orthophenol sulphonic acid. 

 Sozoiodol-diiodophenolsulphonate. 



gives the well-known colors — 



Antifebrine or acetanilide. 

 Phenacetine. 



Pyrodine. 

 Antithermine. 



