INDEX. 
page 
Herschel, William, LL. D. Continuation of an account 
of the changes that have happened in the relative situation 
of double stars, - - - - - 35 3 
Home, Everard, Esq. Some remarks on the structure of the 
orifices found in certain poisonous snakes, situated between 
the nostril and the eye; and the description of a bag con- 
nected with the eye, met Avith in the same snakes, - 70, 72 
form the voluntary expansion of the skin of the neck, in the 
Cobra de Capello or hooded snake of the East Indies, - 346 
Hottentots , remarks on some of their customs, - - 132 
I. 
Ink , method of making one with lac - - - 19 1 
Iridium , name given to a metal found in Piatina, - 414 
Iris, remarks on its arteries, - - - 18 
Iron, sulphur ets of , remarks on, ... 55,3 15 
phosphuret of, remarks on, - - - 334 
subcarburets of, on the proportion of carbon in them, 343 
K 
Knight, Thomas Andrew, Esq. Experiments and obser- 
vations on the motion of the sap in trees, - - 183 
Kupferkies , remarks on, - - - - 54, 58 
L. 
Lac, analytical experiments and observations on it, 
method of making an ink with it, 
effects of different menstrua on it, 
properties of its colouring extract, 
properties of its resin, - 
properties of its gluten, - 
properties of its wax, - 
method of making grindstones Avith it, 
method of making a varnish with it, 
Lakes, on the temperature of the water at their bottom, 
Lecture , Bakerian, - 
Leonis u, on its motion, - 
Light , general law of its interference, 
argumentative inference respecting its nature, 
Lyra c, on its motion, 
191 
191 
196 
209 
210 
211 
212 
215 
216 
25 
1 
368 
1 
11 
373 
