39S Slea}}i E?igines. — Craniology. 



liyperoxide or combination, from which we may by fire and the! 

 oxygenable acids taite off the hyperoxygen. All the other de* 

 grees are salts ; and all the proportions of oxygen, which are 

 not in the ratio of 1 to 2, are so likewise. Every thing which 

 has a crystalline form is a salt ; and the red precipitates, such as 

 litharge, which have a lamellous appearance, arc already sub-* 

 oxygenates of the oxides of their metals." 

 [To be continued.] 



STEAM ENGINES IN CORNWALL. 



By Messrs. Leans' Report of work done in October IS 15, it 

 appears that 34 engines consumed 7o,()09 bushels of coals j that 

 these engines collectively lifted 618,902,532 pounds one foot 

 liigh by a bushel of coals each i being an average duty of 

 18,203,016 pounds lifted one foot with every bushel of coals. 

 During the same month, according to their Report, Woolf's en- 

 gine at Wheal Var consumed 984 bushels of coals, and lifted 

 41,572,070 pounds one foot high with each bushel ; and his en- 

 gine at Wheal Abraham consumed 1062 bushels, and lifted with 

 each bushel 51,443,639 pounds of water one foot high. 



*.,,.* The title at the top of the fourth column of the table of 

 work done by the engines in Cornwall, given in page 118 of the 

 present volume, is incorrectly expressed. It should be read thus : 

 " Pounds of water Ufted ovejoot high, hy every nuinler of 

 bushels of coals equal to the number of the engines." 



CRANIOLOGY. 



Mr. Forster has of late been making some observations on the 

 heads of insane persons in some public madhouses, with a view 

 to determine how far the particular organization of the head ap- 

 pears to modify the character of the mania. He has found in 

 the majority of cases a very striking connexion, particularly with 

 regard to the melancholic insane, who have been found to have 

 the parts of the brain which, according to the new sjstem, pro- 

 duce the sentiment of fear, much developed. It is to be hoped 

 that repeated observations of this kind may lead to important 

 discoveries in the history of this interesting, but at present ob- 

 scure, class of disorders. 



Dr. Spurzheim has given an introductory lecture on the hew 

 anatomy to a scientific class of above 300 persons at Dublin. 



Meteorological Olseri'alio?ts made at Cambridge, and other 

 Places, from October 31 to November 17, 1815.'. 

 Oc^Sl. — Fair day, with cumuli, &c. ; warm for the time of 

 year. 



Nov. 1 . — Chiefly clouded over ; a mild air and hazy distances. 



Nov. 



I 



