304» Scientific news, 



Demetrius, and* and his Kolotos above-mentioned. Mr. Hailer regrets that he* 

 has hitherto only met with works on philofophy, although 

 among thefe many historical ideas, hitherto unknown, occur , 

 here and there : as happened in a differtation on anger, in , 

 which is cited the example of Cadmus punifhed by Bacchus 

 for having given himfelf up to this paffion, a circumftance 

 hitherto unknown. 



IT has for fome time been an object of deliberation with 

 me, to afcertain by what means I might molt effectually 

 remedy an inconvenience which has arifen from the dif- 

 tinguiflied patronage this Journal has been honoured with : 

 The great extent and value of original communications can- 

 not but be duly eftimated by the public ; though at the fame 

 time it has neceflarily followed, that various articles of news 

 and other fubje&s in the foreign Journals, have in many in- 

 ftances been poftponed, and in fome rejected. To retain all 

 •the peculiar advantages of this work, and to afford ample fpace 

 for occafionai and foreign articles of value, the obvious means 

 have appeared, that according to tlje practice of feveral 

 other refpe6table works, each volume thould be concluded by 

 a Supplementary Number ; containing fix (beets, or 96 pages 

 of printed matter, and two plates. And, as many of the 

 former plates, like thofe in the prefent number, have con- 

 tained mathematical figures or outline delineations, capable 

 of being advantageoufly condenfed, it is purpofed in all the 

 future numbers to give two very full plates, and fixteen extra 

 pages of matter, inftead ©f the four plates hitherto given. 

 By this arrangement every volume will in future contain 30 

 iheets or 480 pages of matter, and 10 full plates ; inftead of 

 20 meets or 320 pages, with 16 plates lefs fully occupied. 

 This addition of new matter to the amount of full one half 

 Kiore, will admit the infertion of many interefting article* 

 which want of 100m muft alfo have excluded. 



%* Tlie plate of Rye- Harbour could not be finijhed in time 

 on account of the fudden illnefs of the Engraver, It mil bt 

 given gratis in the Supplement, which will be fublijhcdjan, I* 

 next, at the fame time as No, 50. 



