1915] Oenocytes of the Silkworm 289 
points is the continuous character of the linin filaments and the 
mitochondria. This point of the continuous character of the 
linin is one of the postulates of the protomitomic theory as 
expounded by Mr. Bernard. 
The work here recorded was done and the paper prepared in 
the Entomological Laboratory of Stanford University by me as 
holder of the Bernard Scholarship for 1914-1915 in Insect 
Histology. 
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Bernard, H. M. Some Neglected Factors in Evolution. 1911. 
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zu Secretions granulation nebst kritischen Bemerkungen, Der Berliner Physiol 
Ges. Arch fur Physiol. 1900. 
Chambers, Robert. Microdissection. Studies on the Germ Cell, Science, n. s. 
Vol. XLI, No. 1051, pp. 290. 
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Ergeb. d. Anat. u. Entwick, Vol. 20. 
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Magen—Darmkanals und den osophagus Drtisenzellen bei Saugetiren. 
Anatomische Hefte. 158 Heft. (51 Band, Heft 1). 
Hollande. Les Cérodécytes ou ‘“‘Oenocytes’’ des Insects. Arch. d’Anatomie 
Microscopique Tome XVI fasc. I. 
Lewis and Lewis. Mitochondria (and other cytoplasmic structures) in tissue 
cultures. Am. Jour. Anat. Vol. 17, No. 38. 
Meves, F. Uber Structuren in den Zellen des embryonalen Sttitzgewebes, sowie 
éber die Entstehung der Bindegewebsfibrillen insbesondere derjenigan der 
Sehne., Arch. f. mikr. Anat. Bd. 75, pp. 148-224, see other paper in the same 
vol. and papers in vols. 76 and 82. 
Michaelis, L. Die vitale. Farbung eine Darstellungsmethode der Zell granula, 
Arch. f. mikr. Anat. Bd. 55. 
Rohde, Emil. Zelle und Gewebe in Neuem Licht. 1914. 
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EXPLANATION OF PLATE XXIII. 
Fig. 1. Oenocyte in which the process of secreting has just commenced. 
Fig. 2. Oenocyte in which the nuclear material is moving out along definite lines. 
Fig. 3. Section of an Oenocyte in which the honey-comb structure is appearing 
and in which only small masses of nuclear material remain. 
Figs. 4, 5 and 6. Oenocytes in which sections of the honey-combed nuclei are 
shown. Note the fine terminal filaments which are mitochondria. 
