4 so 



Index. 



Winch, Mr. botanic memoranda by, 

 65. 



■Winter of 1813, 1814, account of, at 

 London, 237. 



■Wollaston, IJr. W. Hyde, siiisle len^e 

 micrometer bv, 7 — liis method of ob- 

 taining iodine, 316. 



T. 



Young, Dr. Thomas, criometer by, 8— 

 on Mr. Sepjilng's new structure of 

 ships, 385. 



Yttria, salts of, 359. 



END OF VOL. III. 



ERRATA, 



Page 63, line 16, for 



n3 - 3 n* H- 



2 « , 7(3 + 3 n« 

 — read ^ 



+ ? n 



and f»T 



n- - II X 2 n + 1 



read 



«' + n X 2fl + 1 



3 3 



Pajje SO, line 8, for insulated read inosculated. 



, 5 lines from bottom, for epaSiii, rend spnsm. 

 -, 3 lines from botiom, for a production, read it productive. 

 Pa»e 130, line 17, for crnlrirugal, read centripetal. 

 Vas^e 215, 2 lines from bottom, for 50th, read 60th 

 Page 334, line 2 from bottom, fur electric read elective. 



ERRATUM IN VOL, II. 



{Not before noticed.) 



P?-f;e 458, I have inadvertently ascribed the number 135° for the latent 

 heat of water to IVir. Cavcntiish. It wps Lavoisier that gave that number. Mr. 

 Cavendish found the latent heat of water 150°. Tliis aifers '.'■■i ca e entirely, and 

 renders it neit to certain that 140', the nuir.ber of Dr. Black, is nearer the truth 

 than 135'j the number pitched upon by Mr. Leslie. 



C. nnlchnn. Prh-.ter, 



