Medical Pneumatic Inftitution. 303 
*© Mrs. Beddoes—Pretty uniform pleafurable fenfations— 
propenfity to mufcular exertion, could walk much better up 
Clifton Hill—has frequently feemed to be afcending like a 
balloon, a feeling which Mr. Burnet {trongly expreffed. 
* Mr. James Thomfon. Involuntary laughter—thrilling in 
his toes and fingers—exquifite fenfations of pleafure—a pain 
m the back and knees, occafioned by fatigue the day before, 
recurreda few minutes afterwards. <A fimilar obfervation we 
think we have made on others; and we impute it to the un- 
doubted power of the gas to increafe the tenfibility, or nervous 
power, beyond any other agent, and probably in a peculiar 
manner. 
« Mr. Stephen Hammick, Surgeon of the Royal Hofpital, 
Plymouth. In afmall dofe, yawning and languor.—It fhould 
be obferved, that the firft fenfation has often been difagree- 
able, as giddinefs; and a few perfons, previoufly apprehen- 
five, have left off inhaling as foon as they felt this.—Two 
larger dofes produced a glow, unreftrainable tendency to 
mufeular ation, high fpirits, and more vivid ideas. 
«¢ Mr. Robert Southey, for many hours after the experiment, 
imagined that his tafte and fmell were more acute, and is 
certain that he felt unufually ftrong and cheerful. Ina fe- 
cond experiment, he felt pleafure ftill fuperior—and has fince 
poetically remarked, that he fuppofes the atmofphere of the 
higheft of all poffible heavens to be compofed of this gas. 
“Robert Kingleake, M.D. Additional freedom and power 
of refpiration, fucceeded by an almoft delirious but highly 
pleafurable fenfation in the head, which became univerfal, 
with increafed tone of the mufcles. At laft an intoxicating 
placidity abforbed for five minutes all voluntary power, and 
left a cheerfulnefs and alacrity for feveral hours. A fecond 
ftronger dofe produced a perfect trance for about a minute ; 
then a glow pervaded the fyftem. The permanent effects 
were, an invigorated feeling of vital power and improved 
fpirits. By both trials, particularly by the former, old rheu- 
mati¢ feclings feemed to be revived for the moment. 
| &Mr.Wedewood, after breathing fome time, threw the. bag’ 
from him, kept breathing on laborioufly with an open mouth, 
holding 
