[ 4 ^ ] 
T. 
7 'able:. See 1 or k, Holy Cro/s, Ram , Doubts, Salim Subjtances. 
Telcfeopes. Amazing improvements in the conftrudion of, p. 89. Double liars of 
excellent ufe in trying them, p. 101. Eflimations made with one -telefcope cannot be 
applied to thofe made with another; nor can the eflimations made with different 
powers of magnifying, though with the fame telefcope, be applied to each other, 
p. 102. 
thermometer. Account of an improved one, by Mr. James Six, p. ?2 . Inconvenience 
attending the thermometers in common ufe, ibid. Which V an Swinden, Mr. 
Kraft, Lord Charles Cavendifc, Mr. Fitzgerald, &c. have endeavoured to remedy’ 
ibtd. Defection of Mr. Six’s, p. 73. Which in fome refpeds refembles thofe of 
Mr. Bernouiili and Lord Charles Cavendilh ; but differs in the effential property of 
ihewing how high the mercury had rifen in the obferver’s abfence, p. 74 How 
.hat difference ,s effe 61 ed, ibid. How to retfify this thermometer after an obferva- 
non, without diflurbing the mercury, p. 75. Method of deposing it, without 
hanging up, and of preventing the mercury Ihifting its place in the fpirits within the 
tube, p. 76. And of making this thermometer a mercurial one, ibid. Other in- 
conveniences attending the common thermometers removed by this, p 77. Mr Six’s 
different methods of conflating his thermometers, p. 78. Method of adjufting the 
divifions on^the fcale to the inequalities of the tubes, p. 78. See Nolle/, Rain. 
' ‘ An att£m P t t0 make °ne for meafuring the higher degrees of heat, from 
a red heat up to the ftrongeft that veffels made of clay can fupporr, by Mr. Jofiah 
Wedgwood, p. 305. Ufes to which a meafure for the higher degrees of heat may 
be applied, p. 306. Inconveniencies arifing from the want of it, ibid. See 
Fire. Manner of conflruding the thermometer, p. 308. Obfervations which 
occurred in ufing this thermometer, p. 311-322. Analyfis of the clay of which 
the thermometric pieces are formed, p. 323 _ 32 6. 
Foadjlone See Mineral Subjlances. The mode of Us flratification fully and accurately 
defcribed, by Mr. Whitehurfl, of Derbylhire, p. 333. I ts more obvious ie £ 
ibid. Experiments on, ibid. Conclufions from thofe experiments, p. 33 r 
Torleje, John. His account of a monflrous birth in the Eaft Indies, p. 44. 
turner, Mr. See Mineral Alkali. 
9W * A term ufed in fmelting iron, explained, p. p. 
V. 
Han Snuinden. See thermometer. 
r v ,M U H &„. Some farther confideration. on the influence of, on the animal 
creation, by John Ingen-houfz, p. 4.6. Account of fevcral experiment., demon- 
nratmg, that vegetable. difTafe through our a.mofphere, in the fun-foine, a conti- 
llual 
