328 Dr. guthrie on the Ruffian Manner of 
of a uniform glare (as if almoft tranfparent) before the 
openings are fhut, elfe the ugar or vapour is fure to 
fucceed to mifmanagement of this fort, and its effects are 
as follows. 
If a perfon lays himfelf down to fleep in the room ex- 
pofed to the influence of this vapour, he falls into fo 
found a fleep that it is difficult to awake him, but he feels 
(or is fenfible of) nothing. There is no fpafm excited in 
the trachea arteria or lungs to roufe him, nor does the 
breathing, by all accounts, feem to be particularly af- 
fe£ted : in fhort, there is no one fymptom of fuffocation; 
but towards the end of the cataftrophe, a fort of groan- 
ing is heard by people in the next room, which brings 
them fometimes to the relief of the fufferer. If a perfon 
only fits down in the room, without intention to fleep, 
he is, after fome time, feized with a drowzinefs and in- 
clination to vomit. However, this laft fy mptom feldom 
affects a Ruffian, it is chiefly foreigners who are awaked 
to their dangers by a naufea ; but the natives, in common 
with ftr angers, perceive a dull pain in their heads, and if 
they do not remove directly, which they are often too 
fleepy to do, are foon deprived of their fenfes and power 
of motion, infomuch, that if no perfon fortunately difco- 
vers them within an hour after this worft ftage, they 
are irrecoverably loft; for the Ruffians fay, that they 
1 dcj 
