"^ Miscellanies. 197 



from 1817 io 1836, arranged in the order of the Mortality. Ta- 

 ken from the Official Report from Twenty-two Stations. 



Deaths in Deaths by 

 1000. Fever, 



1. The Bahamas, 200 



2. Savannah la Mar, 200 



3. MontegoBay, 178-9 150-7 



4. Spanish Town, 162-4 141-1 



5. Tobago, . . 152-8 104-1 



6. Port Antonio, 149-3 126-0 



7. Up Park Camp, 140-6 120-8 



8. Dominica, 137-4 49-3 



9. St. Lucia, 122-8 63-1 



10. Port Royal, 113-1 93-9 



11. Trinidad, 106-3 61-6 



12. Falmouth, 102-6 80-0 



13. Stony Hill, 90-2 70-5 



14. British Guiana, 84-0 59-2 



15. Lucea, - 84-9 63-2 



16. Fort Augusta, . 73-5 55-5 



17. St. Kits, Nevis and Tortola, 71-0 42-1 



18. Grenada, 61-8 26-3 



19. Barbadoes, 58-5 11-8 



20. St. Vincents, 54-9 11-2 



21. Antigua and Montserrat, 40-6 14-9 



22. Maroon Town, 32-7 15-3 



Lond. and Edin. Phil. Mag., Jan. 1839." 



19. Electrical Exciteinent in Leather by Friction. — The Rev. 

 Thos. Drury, under date of Dec. 17, 1838, at Keighley Rectory, 

 Yorkshire, England, communicates the following fact to Dr- Faraday. 



He speaks of what he terms an extraordinary electrifying machine, 

 which is no other than a leather strap which connects two drums in 

 a large worsted mill in the town of Keighley- " The dimensions and 

 particulars of the strap are as follows : 



It is in length .24 feet 



Breadth . . . . . - • . 6 inches 



Thickness ....... \ do. 



It makes 100 revolutions in a minute. 



The drums, over which it passes at both ends, are two feet in dia- 

 meter, made of wood fastened to iron hoops and turning on iron 

 axles ; these drums are placed at 10 feet distance from each other, 

 and the strap crosses in the middle between the drums, where there 

 is soine friction ; the strap forming a figure of eight. There is no 



