234 
feet, that you seem to hear the rain. In the interior of the church 
several objects are represented with the greatest accuracy, viz. 
a part of a scaffold, to which ropes are attached, a basket with 
tools, &c. The Gothic pillars of the church display a particularly 
handsome view. 
After having contemplated this painting for a considerable 
time, a signal is given with a bell. The floor on which the spec¬ 
tators stand, turns to another opening through which you have a 
view of the city of Rouen, in France. Now the same effects of 
light as in the other piece are displayed, and you imagine your¬ 
self to be in the place, which is represented to your sight. But 
the first piece made the best impression on me. The finest part 
of this diorama is the representation of interior parts of buildings, 
I was delighted at the fine view of the newly-finished build¬ 
ings of Regent’s park, the construction of which was begun dur¬ 
ing my visit three years ago. This new quarter consists of palaces. 
At Mr. Ackermann’s store I enjoyed a sight of the.greatest variety 
of fancy articles. It is only to be regretted that the works pub¬ 
lished at his establishment are so very expensive. I had the 
pleasure of becoming personally acquainted with Mr. Ackermann, 
this venerable philanthropist is plain in appearance, but is very 
interesting in his conversation. He spoke much with me about 
my happily finished travels, and invited me to his country-seat; 
but I was obliged to decline this invitation on account of the 
short time which remained at my disposal. I next visited the 
store of another German, a cutler and manufacturer of surgical 
instruments, Mr. Weiss; he is a native of Rostock, but already 
more than thirty years established in this city, and particularly 
in making surgical instruments, he is said to be the first manu¬ 
facturer in England. He showed me several apparatus and in¬ 
struments, among which there was one for removing a stone, with¬ 
out the necessity of performing the operation of cutting. He 
showed me the cast of a stone as large as a chesnut, which had 
been extracted from the bladder of a man, without any cutting 
operation. Moreover, he showed me a poison pump of his own 
invention, by means of which, poisons that have been swallowed, 
may be extracted from the stomach. This machine consists of a 
brass tube which contains the pump; to this is attached a long 
tube of elastic gum, which terminates in a sack of the same sub¬ 
stance provided with holes. This tube is passed through the 
throat into the stomach, and when the sack has entered the sto¬ 
mach, the poison is pumped through the flexible tube into the 
brass one. By turning the handle of the pump the gum tube is 
closed; then it is forced down again, by means of which another 
valve on the other side of the brass tube opens, and to this ano¬ 
ther elastic tube is attached, through which the extracted poison 
