SEARCH
0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Prev | Current Page 159 | Next

Babbage, Charles, 1792-1871

"On the Economy of Machinery and Manufactures"


158. Lace made by caterpillars. A most extraordinary species
of manufacture, which is in a slight degree connected with
copying, has been contrived by an officer of engineers residing
at Munich. It consists of lace, and veils, with open patterns in
them, made entirely by caterpillars. The following is the mode of
proceeding adopted: he makes a paste of the leaves of the plant,
which is the usual food of the species of caterpillar(4*) he
employs, and spreads it thinly over a stone, or other flat
substance. He then, with a camel-hair pencil dipped in olive oil,
draws upon the coating of paste the pattern he wishes the insects
to leave open. This stone is then placed in an inclined position,
and a number of the caterpillars are placed at the bottom. A
peculiar species is chosen, which spins a strong web; and the
animals commencing at the bottom, eat and spin their way up to
the top, carefully avoiding every part touched by the oil, but
devouring all the rest of the paste. The extreme lightness of
these veils, combined with some strength, is truly surprising.
One of them, measuring twenty-six and a half inches by seventeen
inches, weighed only 1.


Pages:
147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171