^1 



.CONTEXTS OF THE VOI.UM©. 



MISCELLANEOUS INTELLIGENCE. 



I. Mechanical Science. 



Page. 



1 On the compression of Gases. . 467 



2 On a N^w Optical Property of 



Dichroite 468 



Page. 



3 Velocity of Cannon Balls 468 



4 Security from Fire in Tiieatres ib. 



5 Macadamized Roads. *...... 470 



II. Chemical Science. 



1 Determination of the Electro- 



condueting power of Metals . . '470 



2 On Lightning-rods and Com- 



{)asses* ....'.....*..,.*.... "471 



3 On the Transference of Ponder- 



able Matter in Electric t)is-. 

 charge's 472 



4 New Phenomena produced by 



Vapour ih. 



5 Transference of Heat by change 



of capacity in Gas 474 



6 On the change of Zero in Ther- 



mometers 475 



7 On Bromine and certain of its 



Compounds 476 



8 On Oxide of Iodine and lodous 



Acid 477 



• 9 Quantity of Charcdal obtained* 



from Wood 479 



10 Preparation of Cyanide of Iodine 480 



11 0*a the Detection of Hydrocy- 



anic Acid in the Bodies of Ani- 

 mals poisoned by it ib. 



12 On the presence of Ammonia in 



the natural Oxide of Iron 481 



13 Volcanic Muriate of Ammonia" 



of the Isle of Lanzerole .... ib, 



14 On the Efflorescent Salts of Vol- 



canic Rocks* ....'. 482 



15 On the Nitrates of Ammonia and 



Mercury ib. 



If) Peroxide of Potash from Nitre 



17 Crystallized Carbonate of Po- 



tash 



18 Sulphates of Manganese and 



Soda , 



19 CompQsition of White Copper, 



or Packfong 



20 Method of Bronzing Tin 



21 Chromate of Silver crystallized 



22 Sulphate of Quinia 



23 Adulteration of Sulphate of 



Quinia with Sugar 



24 Composition of Vegetable prox- 



imate Principles 



25 On Legumine 



26 Substances contained in Essen- 



tial Oils 



27 t!hange of Oil of Turpentine by 



exposure to Air 



28 Preparation of Cafeine 



29 Black Dye and Ink prepared 



with Logwood 



30 Improvement in Varnishes .... 



31 Substances obtained from Cas- 



tor Oil 



32 Distillation of Fatty Bodies . . 



33 Action of Nitric Acid on Hogs' 



Lard 



34 Ozraazome 



483 



ib. 



id. 



ib. 

 ib, 



484 



485 

 ib. 



486 



487 



488 



ib. 

 ib. 



ib. 

 489 



fb. 

 490 



I [I. Natural History. 



1 On Death by Insufljation. 491 



2 Remarks on the Human Voice ib. 



3 Sabulous formation in the Brain 492 



4 Analysis of a Ferruginous Re- 



nal Calculus ib. 



5 Production and Preparation of 



Pearls 493 



6 Peculiar Cases of the Use of 



Milk as Food ib. 



7 Preparations of Henbane and 



Belladbnna. *.....". ib. 



8 On the Culture of Bees in Fo- 



;-ests ^. ........... ., 494 



9 Signs of Increase, Maturity, and 



Cecajp in Trees ,,•.,.. .' ' ib. 



10 Structure of Plants 496 



11 Experiments on the Fecunda- 



tion of Vegetables 497 



12 On a natural Botanical Arrange- 



ment dependent on chemical 

 characters 4&8 



13 On the Application of a Liga- 



ture to Fruit-trees and to Vines 499 



14 Method of reviving Plants, 



Shoots, &c ib. 



15 Ancient Glass Bottles '. . . 500 



16 Natural Prognostics of the Wea- 

 .ther 501 



17 On Ancient Aerolites 502 



18 Fresh Water found at Sea . . . ib. 



