EXPLANATION OF PLATES 12$ 



always their transparency, so that when viewed through 

 the microscope, and enlarged thereby, it is easy to see 

 the movements of their viscera and the liquids contained 

 therein. In order that you may surmise the real pro- 

 portions of these little animals, I will not omit to say 

 that in drawing them the same microscope was always 

 used; it is of three lenses and was made in Rome with 

 great skill and accuracy by Eustachio Divini. 



With the aid of this single microscope, three kinds of 

 winged ants are reproduced in the following plates, also 

 the grain weevil, the worm that eats into candied fruits 

 and spice, the bug which explores the head and back 

 of man; and that other kind that lurks in the hairs of 

 the loin ; the louse of the ass, of the camel, and that of a 

 certain sheep from Tripoli. There is also a drawing of 

 the tick of the wild goat, and likewise one found in the 

 tiger. The lion's tick has the same shape as that of the 

 tiger, but it is different in size and in color; the lion's 

 tick is much larger and is of a light yellow color except 

 in a part of the back, where is seen a splotch of dark 

 tawny color. The tick found on the tiger is entirely 

 of tawny color. I have had search made for lice on 

 tigers, but these animals were apparently not infested 

 by them, and the same can be said of all the leopards, 

 lions, bears, wildcats, ichneumons, and other beasts, 

 which according to ancient and royal custom, are main- 

 tained in the menageries of His Highness, the Grand 

 Duke. I do not deny that they may be subject to ver- 

 min, but I simply affirm that the animals at present in 

 the menageries are free from them, or else it may be 

 that sufficient care was not exercised in looking for 

 them, as meddling with lions and tigers is a business 

 that few care to undertake. 



