1 8 Marshall Ward and Dunlop. 
A slightly opalescent colourless solution. Turbid in two 
days. 
No. 4. Aqueous extract of endosperm, cleared from embryo 
and testa. 
A colourless solution ; slightly opalescent in two days. 
No. 5. Aqueous extract of pieces of testa taken from the 
sides of the seed. 
(The testa can be more easily removed clean from the sides 
of the seed than elsewhere.) 
Clear colourless solution. 
No. 6 . To a fresh solution of boiled pericarps, prepared 
and filtered as before, I added a few drops of solution No. 1 
(i. e. glycerine extract of embryos) which had stood for 
hours in hot-house. 
No results in two days. 
No. 7. To another portion of the pericarp extract added a 
few drops of solution No. 3 (i. e. aqueous extract of embryos), 
same age, &c. 
No results in two days. 
No. 8. To a third portion of pericarp extract added a few 
drops of solution No. 3 (i. e. aqueous extract of thick margins 
of testa— and raphe, as I discovered later). 
A dense yellow precipitate began to fall in half an hour, 
and became more and more abundant during the night. 
No. 9. To a fourth portion of extract of pericarp added a 
few drops of solution No. 4 (i. e. extract of endosperm in 
water) : same conditions. 
No results at all. 
No. 10. To a fifth portion of the same pericarp extract 
added a few drops of solution No. 5 (i. e. aqueous extract of 
sides of testa only). 
Next day were very doubtful traces of turbidity, but not the 
slightest precipitate 1 . 
1 Nor did any precipitate fall in the next twenty-four hours. 
