i 
SOLANACEM, 639 
cause gastralgia, but smoking causes neuralgia of the fifth pair. 
It renders the vision weak and uncertain, causing objects to 
appear nebulous, or creates musce rolaaiiee and similar subjec- 
tive perceptions. Analogous derangements of hearing occur, 
with buzzing, ringing, etc., in the ears, and even hallucinations 
of this sense. Often there is a feeling of a rash of blood to the 
head, with vertigo and impairment of attention, so as to prevent 
ontinuous mental effort; the mind is also apt to be filled with 
ude and groundless cigs leading to self-distrust and 
melancholy. The sleep is frequently restless and disturbed by 
distressing dreams. It impairs muscular power and co-ordina- 
ipe-smoking pyridine preponderates, but when tobacco 
n¢ ced in cigars, where there is free access of air, the 
oduct of the dry distillation undergone by the tobacco 
ine, which is far less active than PING: and me 
partly account for the fact that many Suropeans who — 
resided for some years in India, are unable to smoke a ~ 
but can smoke many times the equivelent of a pipeful of 
© in the form of cigars with impunity. 
Ww work, as in sedi In these cases the effect is 
oy not “i to the nicotine itself, but to the stimonias of 
