1 el 24 OTTO F. KAMPMEIER 
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with especial reference to its development in the trout. Memoir 
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- APPENDIX 
At the time when the above paper had already appeared in proof, I found a 
reference in the literature to an article by Bles on “‘The life-history of Xenopus 
laevis’? (Trans. Roy. Soc. Edinb., vol. xli, 1905) in which he described and pic- 
tured the anterior lymph hearts in the larvae of this anuran. Reference to this 
paper will be made in my work on the comparative morphology of the systemic 
lymphatics which is in preparation. 
