VOL. XLV.] 



PHILOSOPHICAL TBANSACTIONS. 



TABLE v.— Of Sulphurs and Bitumens. 



Sulphur. Petit 2.344 



D" a piece of roll. Hauksbee 2.010 



. . vive. Boyle 2.000 



.. German, very fine. Boyle 1.980 



.. transparent, Persian. Davies ..., 1.950 



Sulphur minerale. Freind 1 .875 



Brimstone, such as commonly sold, J.C. 1.811 



D°. Cotes 1.800 



Asphaltum. Boyle, iii 243, a 1.400 



Scotch coal. Boyle, III 243, a 1.300 



Coal, of Newcastle. L 1 270 



Coal, pit, of Staffordshire. Oxf. Soc. 

 Jet. J. C 



D". Davies 



Davies 



Succinum citrinum. Davies 



Id. pingue. J. C 



Id. flavum. Davies 



Id. pellucidum. J. C 



Id. album, item pingue. Davies . . . 



Amber. Boyle. Newton. C 



Fme gunpowder. Reynolds 



549 



1.240 

 1.238 

 1.16"0 

 1.020 

 l.UO 

 1.087 

 1.080 

 1.065 

 1.060 

 1.040 

 0.698 



TABLE VI.— O/" Gums, Resins, <^c. 



GUM Arabic. Freind 1.430 



D°. Newton. C 1 .375 



Opium. Freind I.360 



Gum tragacanth. Freind 1.330 



Myrrh. Freind 1 .250 



Gum guaiac. Freind 1.224 



Resina Scammonii. Freind 1.200 



Aloes, J. C. (qu. whether the resin or 



the wood) 1.177 



Asafsetida, a very fine sample. Hauksbee 1.251 

 D'' from Dr. John Keill's Introd. ad ve- 



ram Physicam 1.143 



Pitch. Oxf. Soc. C 1.150 



Thus. Freind 1.071 



Camphor. Newton. C O.996 



Bees-wax. Cotes 0.955 



Cera. Ghetaldus O.954 



Wax well freed from the honey. Davies 0.938 



Cera. Petit O.937 



D° the same lump 2 years after. Davies 0.942 



Balsamus de Tolu. Muschenbroek .... O.896 

 Mastic. J. C. (qu. whether the gum or 



the wood) 0.849 



TABLE VII.— 0/" JFoods, Barks, 4-c. 



Coco shell. Boyle 1.345 



Bois de Gayac. Muschenbroek 1.337 



Lignum guaiacum. Freind 1.333 



Lignum vitae. Oxf. Soc 1.327 



Speckled wood of Virginia. Oxf. Soc. . 1.313 



Cortex guaiaci. Freind 1.250 



Lignum nephriticum. Freind 1.200 



Lignum asphaltum. J.C 1.179 



Ebony. J.C. Item aloes. J.C 1.177 



Santalumrubrum. J.C 1.128 



Id. album. J.C 1.041 



Id. citrinum. J. C O.8O9 



Lignum rhodium. J. C 1.125 



Radix chinae. Freind 1.071 



Dry mahogany. L 1 .063 



Gallae. Freind 1.034 



Red wood. Oxf. Soc. It. box wood. 



Oxf. Soc. Ward. C 1.031 



Logwood. Oxf. Soc 0.913 



Oak, dry. close texture. Oxf Soc 0.932 



D" tried another time. Oxf Soc 0.929 



. . sound, dry. Ward . . 0.927 



. . dry. Cotes 0.925 



. . dry, English. L 905 



Oak of the outside sappy part, felled a 



year. Oxf. Soc 0.870 



D°. Reynolds 0.801 



D° very dry, almost worra-eaten. Oxf. 

 Soc 



Dry wainscot. L 



Beech meanly dry.- Oxf Soc 



Mastic (qu. if the wood or gum). J. C. 

 Ash, dry, about the heart. Oxf Soc. . . 



D° dry. Cotes 



. . meanly dry, and of the outside lax 



part of the tree. Oxf. Soc 



Elm dry. L 



D°. Reynolds 



. . Oxf. Soc. C 



Rad. gentianae. Freind 



Cortex Peruvianas. Freind 



Crabtree, meanly dry. Oxf. Soc 



Yew, of a knot or root 16" years old. Oxf 



Soc 



Maple dry. Oxf. Soc. C 



Plumtree dry. J.C 



Fir, dry yellow. L 



Dry white deal. L 



Lignum abietin. Freind 



Fir, dry. Cotes 



D°. Oxf. Soc 



Walnut tree, dry. Oxf. Soc 



Cedar, dry. Oxf. Soc 



Juniper wood, dry. J. C 



0.753 

 0.747 

 0.854 

 0.849 

 0.845 

 0.800 



0.734 

 0.800 

 0.768 

 0.600 

 0.300 

 0.734 

 0.765 



0.760 

 0.755 

 0.663 

 0.657 

 0.569 

 0.555 

 0.550 

 0.546 

 0.631 

 0.613 

 0.556 



