34 ACTION OF HALOGEN COMPOUNDS OF ETHYL AND AMYL 
were collected, washed, and dried, and a portion of them was submitted to ana- 
lysis in the ordinary way. 
4-325 grains, dried at 212°, gave 
8:925 ,, carbonic acid, and 
4.2180 ,, water. 
| 4565 ,, dried at 212°, gave 
{2195 ,, iodide of silver. 
Experiment. Calculation. 
-—_O_—_——e———e 
Carbon, . 3 ; 56:27 56°31 C,, 276 
Hydrogen, : : 5°60 5°50 H,, 27 
Nitrogen, . - 3 571 Np 28 
Oxygen, . ‘ : 6-55 0, 32 
Iodine, . ; ‘ 25:98 25:93 I 127-1 
100-00 100-00 490-1 
A comparison of the above results and appended calculation will shew that a re- 
placement of hydrogen by ethyl in, or an attachment of iodide of ethyl to, the 
alkaloid has taken place, according to the equation, 
Cy H,, N, 0,+ 0, H; I=C,, { ot } N, 0,, HI=C,, H,, N, O, I. 
“The salt crystallizes without water, and whatever constitution subsequent experi- 
ment may assign to it, it will be now described as an hydriodate, and its base as 
ethylostrychnine. 
Hydriodate of ethylostrychnine is soluble in about 50 or 60 parts boiling 
water, and in about 170 of water at 60°; a tolerably dilute fluid deposits the salt 
in very fine white four-sided prisms of considerable lustre, which they retain in 
the dry state; it is also soluble in rectified spirit, and comes out of that menstruum 
in short prismatic crystals. It is unaltered in the air; at 212° it loses no weight, 
but acquires a slight shade of colour; at a higher temperature it fuses and 
blackens, affording thick vapours of an alkaline reaction, and disagreeable odour ; 
and a yellowish sublimate, rather oily in appearance, forms on the sides of 
the vessel ; no vapours of iodine are to be observed during the process of heating. 
This salt gives no base with potass or ammonia, but is less soluble in these 
alkaline fluids than in water, and is consequently precipitated, on their addition, 
in strong solutions ; strong potass throws it down at once in the cold, and when 
ammonia is added to a concentrated boiling aqueous solution, the unchanged 
salt deposits immediately in fine needles. It is readily decomposed by oxide 
of silver, and the hydrated base may be obtained in the crystalline state. These 
reactions assimilate the salt to an iodide rather than to an hydriodate, and the 
characters of the base, when isolated as far as it can be, being those of an 
analogue of ammonium oxide, its salts would perhaps be more correctly called 
