INTRODUCTION OF THE MICROSCOPE 65 
with the intestine, which retain his name in the insect anatomy 
of to-day, under the designation of Malpighian tubes. The 
silk-forming apparatus was also figured and described. These 
Fic. 14.—From Malpighi’s Anatomy of the Silkworm, 1669. 
structures are represented, as Malpighi drew them, on the 
left of Fig. 14. 
This monograph, which was originally published in 1669 
by the Royal Society of London, bears the Latin title, Disser- 
tatio Epistolica de Bombyce. It has been several times re- 
published, the best edition being that in French, which dates 
5 
