OF ARTS AND SCIENCES : OCTOBER 11, 1864. 361 



tries, where the public observance of the lunations is part of the duty 

 of government, the change may have been repeatedly effected. 



" After the capture of Jerusalem by Jehoash, the calendar of Israel 

 was imposed on Judah, the Biblical computation thenceforward be- 

 ing exclusively in lunar years ; the date of the death of Sennacherib 

 agreeing with that given by Herodotus. Josephus, in seeming opposi- 

 tion to the Bible, gives ' 130 years, 6 months, 10 days' from the cap- 

 tivity of the ten tribes to the destruction of the temple. If the Biblical 

 account is in lunar years, these give 130 Julian years, 6 lunations, 2§§ 

 days. From the destruction of the temple to the second year of 

 Darius, two known points in chronology, is according to the Bible 

 (2 Chron. xxxvi. 21, Hagg. i. 1, Zech. i. 1 to 16, vii. 1 to 5, and Ezr. 

 iv. 24) ' seventy years'; this is true of lunar years only." 



Mr. C. M. Warren presented two memoirs, and gave the 

 following synopsis of the conclusions arrived at, viz. : — 



Under the general title. Researches on the Volatile Hydrocarbons, 

 a memoir bearing the following title, viz. : On the Volatile Hydrocar- 

 hons from Coal-tar Naphtha, Oil of Cumin, and Cuminic Acid ; xoith 

 a Preliminary Notice of some of the Facts derived from the Study of 

 the Light Oils from Wood-tar. 



Also, under the same general title, a second memoir bearing the fol- 

 lowing title, viz. : On the Influence of C^H^ on the Boiling-points in 

 Homologous Series of Hydrocarbons, and in some Series of their De- 

 rivatives ; including critical Eemarhs and Observations on 3Iethods of 

 determining Boiling-points. 



In the first memoir I propose to show : — 



1. That coal-tar naphtha contains only four hydrocarbons within 

 the range of 80° -170° C, as taught by Mansfield and confirmed by 

 Ritthausen. 



2. That the benzole series within that range of temperature is lim- 

 ited to four members ; and does not contain five, as asserted by 

 Church. 



3. That these four members have the boiling-points 80°, 110°, 140°, 

 and 170° respectively; and consequently, tliat the boiling-point difler- 

 ence in this series for an elementary difference of C2 H^ is 30°, instead 

 of 22° and a fraction, as alleged by Church. 



4. That the body obtained from coal-tar naphtha boiling at 140° is 



