Notes . 
77 
Nuclei and Protoplasm. In the laticiferous tubes of all three systems 
the nuclei are particularly large and distinct. They are readily dis- 
tinguishable even in unstained sections. Staining with haematoxylin 
or with methyl-green brings them out very clearly. They are large 
and granular, and closely resemble those of the surrounding cells. 
They frequently contain very distinct nucleoli. 
When a tube narrows considerably and then ends blindly a nucleus 
is frequently found just below the point where the narrowing takes 
place. Where the latex has contracted from the walls of the tubes, the 
protoplasmic layer may be seen, giving a sharp, definite outline to 
the contracted contents. It is much more definite than is the case in 
Manihot Glaziovii. 
Possibly the abundance of the protoplasm and the size of the nuclei 
may be correlated with the independent growth of the tubes, above 
referred to. In some cases several nuclei were found very close 
together in a tube, but no division stages were observed. 
The latex is coarsely granular in mature tubes, much more finely 
granular in the younger parts. It is clearer in the tubes at a node 
than in those in an internode, hence sections near a node are most 
suitable for the study of the nuclei. 
AGNES CALVERT, London. 
s SPOROPHORE ’ AND ‘ SPOROPHYTE.’— Into the English 
edition of Goebel’s Outlines of Comparative Morphology and Classifi- 
cation of Plants I imported the word 4 sporophyte ’ with the concurrent 
4 oophyte ’ as equivalents for 4 asexual generation ’ and 4 sexual 
generation’ respectively in Vascular Cryptogams. 4 Sporophore ’ and 
4 oophore,’ which were used by Vines in the second English edition of 
Sachs’s Text-book, as terms for these generations, are quoted in 
Goebel’s Outlines, but preference is given to ‘sporophyte’ and 
4 oophyte.’ The necessity for this modification in the terminology has 
been questioned by several critics in reviews of the edition of Goebel’s 
work, and rightly too upon the evidence, for no explanation of the 
change was offered. But the innovation was made only after full 
consideration, and in view of the use of the term 4 sporophore ’ with 
another signification in the English edition of De Bary’s Morphology 
and Biology of the Fungi, Mycetozoa, and Bacteria, which has just been 
published ; and I now take the opportunity of giving an account of the 
reasons which led to the introduction of the terms in question, terms for 
