io8 Schunck . — The Chemistry of Chlorophyll . 
almost immediately with chlorophyll while still lodged in the 
vegetable cell ; very soon ceasing to appear, and being generally 
not even perceptible with ordinary chlorophyll in solution. The 
explanation of this singular fact might possibly present no 
difficulty to the physiologist, who would perhaps say that the 
one is physiological, living chlorophyll, the other chemical, 
dead chlorophyll, — a view which it would be difficult to con- 
trovert, except by restoring to ordinary chlorophyll, by a 
chemical process, the property which it possessed while 
forming part of the living organism, and which it lost in 
consequence of the treatment employed for the purpose of 
extracting the colouring matter. Be this as it may, it is 
certain that this anilising process, as it may be called, ends 
in the formation of a definite, crystallised chemical substance, 
the properties of which are no less peculiar than is its mode 
of formation. I propose to call this substance anilophyll , a 
name which simply points to its origin without involving any- 
thing hypothetical. 
Properties of anilophyll. When prepared in the manner 
above described it consists of lustrous needles, which in the 
mass appear garnet-red with a tinge of purple, and by trans- 
mitted light are light brown. It melts at I 90 - 193 °C. — the 
determination having been made with five specimens prepared 
at various times — to a dark brown liquid, and being heated 
more strongly burns easily without leaving any residue. It 
dissolves, but not very readily, in boiling ether ; the solution 
is yellow and resembles a watery solution of isatin ; it shows 
no absorption-bands in any part of the spectrum, and no 
absorption in the red and yellow, but a good deal in the green, 
and still more in the blue. It is more soluble in boiling 
alcohol than in ether, giving an orange-coloured solution, 
which on cooling deposits fine silky needles arranged in 
rosettes and fan-shaped masses, the liquid becoming nearly 
colourless. It is easily soluble in chloroform and carbon 
disulphide as well as in boiling glacial acetic acid, but is only 
slightly soluble in boiling ligroin. The colour of the solu- 
tions when concentrated resembles that of ferric sulphocyanide, 
