On the Structure and Reproduction of 
Cystopus Candidus, Ldv. 
BY 
HAROLD WAGER, F.L.S., 
Inspector of Science Schools for the Science and Art Department . 
• M 
With Plates XV and XVI. 
I N the year 1887, while working in Dr. Scott’s laboratory 
at South Kensington, I undertook at his suggestion an 
investigation into the structure and mode of fertilization of 
Cystopus candidus (Lev.). A large number of observations 
and sketches were made, and a number of interesting facts 
determined, which tended to disprove the observations made 
by Fisch in 1885 as to the nature of the cytological structure 
and fertilization ; but, owing to lack of material, I was at that 
time unable to complete the investigation. Since then, how- 
ever, I have collected considerable quantities of fresh material 
in various parts of the country, and am now able to give 
a fuller account of the karyology and fertilization of this 
plant. 
By the application of the new methods of study initiated 
by the introduction of the paraffin-method to botanical 
technique, by the improved methods of staining, and the 
use of the beautiful apochromatic lenses of Zeiss, a great 
L Annals of Botany, Vol. X. No. XXXIX. September, 1896.] 
X 
