A STUDY IN CHROMOSOME REDUCTION. 627 
. A section of a mother-cell in Aloe, showing the lateral pairing of the spiremes. 
A later stage of the same. The coiling and twisting of the pairing chromosomes about one 
arly shown. 
. A portion of a section to show the chromosomes of the second meiotic division at the poles. 
een that the chromosomes appear to be quite homogeneous throughout. 
The same at a slightly older stage. The first indication of the accumulation of karyolymph 
the chromosomes is seen by the presence of small lacune. The chromosomes are becoming 
55. A later stage of the same. The chromosomes are crowded closely together, and the whole mass 
A appearance due to the presence of karyolymph in the numerous small vacuoles. 
. Another stage of the same, where the individual chromosomes may be easly identified. <A 
now envelops the small daughter nucleus. 
. The same at a slightly later stage. © 
. A section of a microspore still confined within the thick wall of the mother-cell. The chromatin 
reticulum stage. 
