415 



XLIV. — Contributions to the History of the Terebenes. — On Colo- 

 phonine and Colophonic Hydrate. By Charles R. C. Tichborne, 

 F. C. S.,:M. R. I. A., &c. 



[Read January 11, 1869.] 



This paper contained a description of two substances discovered by the 

 author, and procured from the products of the destructive distillation of 

 resin. 



The paper will be found in extenso in the " Transactions" of the Aca- 

 demy, vol. xxiv., Science. 



Colophonic Hydrate is white, and perfectly odourless ; it is very 

 soluble in water, alcohol, and ether, and is but slightly soluble in cold 

 bisulphide of carbon ; it crystallizes readily from water and alcohol in 

 beautiful acicular prisms, which sometimes attain a considerable magni- 

 tude. 



Colophonic Hydrate has the following composition : — 

 C 10 H 22 O 3 : H 2 0. 



On submitting Colophonic Hydrate to a heat sufficient to fuse it, a 

 molecule of water is after some time dissociated with partial sublima- 

 tion of the hydrate, Colophonine remaining. It has the following com- 

 position : — 



C 10 H 82 O 3 . 



Colophonine is probably isomeric with terpine hydrate, or is more 

 correctly a homologue of terpine. When it is treated with sulphuric 

 or any of the acids, it forms beautifully coloured products, which give 

 various shades of green, red, or blue. The alcoholic solutions give 

 peculiar absorption spectra, which were figured in the above paper. 



XLV. — Biographical Notice of August Schleicher. 

 By Dr. Lottner. 



[Read January 11, 1869.] 



Through the kind permission of your Council there has been accorded 

 to me the sad privilege of speaking to you a few words on the life and 

 labours of my illustrious countryman and fellow-philologist, August 

 Schleicher, whose untimely and sudden death is a severe blow to all 

 students of the science of languages, and cannot but be a source of 

 sorrow for scholars throughout the civilized world. He was born in 

 1821 ; and he died on the 6th of December, 1868, scarcely more than 

 forty-seven years of age. 



It is but little more than a year since we had to deplore the death of 

 our great master, Franz Bopp, and already he has been followed by the 

 man upon whom most of us looked as his intellectual, though not his 



R. I. A. PROC — VOL. X. 3K 



