1914] 
BARTHOLOMEW—DIASTASE IN RED ALGAE 
143 
cease before digestion was complete, experiments were set up as 
before but allowed to run for a longer time. 
in table V. 
TABLE IV 
EXTRACT FROM DASYA ELEGANS 
The results are shown 
AMOUNTS OF VARIOUS SOLUTIONS 
AFTER 17 HOURS 
AFTER 25 HOURS 
cc. algal extract+s5 cc. 
cal | See 
Po — oe SCC: 
Were Onete. 
Po. commerical ets 
Oc. Statch paste... ... 
2 Cc, commercial diastase 
cc. star ch 
Spigot 1s 4 eee gs a oe eel 
2 0c. distilled water 
Control, 5 pas ie 
‘sig ios oe —— paste . 
c. algal ex Spies 
; ae Meetisiaioat ESE He 
Let, ee a eae a 
. Amts. ppt. with ee Amts. ppt. with 
ame | Relies | “aertee” | eee 
Blue None Blue ? Trace 
Tinge of : 
lue ? Trace purp. Very slight 
Very light 
purple Marked Brown marked 
Purple- ery 
brown Marked Brown marked 
lue None Blue None 
Blue None Blue None 
Blue None Blue None 
Cy ie Coe aes one oe, one 
Maples es DRO Medium Poe 1 ee OM eaten 
TABLE V 
EFFECTS OF LONGER CONTINUED ACTION OF THE ALGAL EXTRACTS AND THEIR COM- 
_—_ 
PARAT 
IVE RATES OF ACTION 
AMOUNTS oF soLUTION on 5 cc. 
OF STARCH PASTE 
AFTER 3 DAYS 
AFTER 6 DAYS 
Oe aes 
2 cc. Agardhiella extract ... 
3 cc. Agardhiella extract ... 
2 cc. Ceramium* extract .- - 
3 cc. Ceramium* extrac 
2 cc. Polysiphonia extract . 
3 cc. Polysiphonia extract ii 
: = ao ‘ 
eet Amts. ppt. with 
Todine col Iodine color 
cing color |" Fettng’s | Teding color "Fenn 
Purple Fair Very light | Very 
purple marked 
Light purple} Medium Very light | Very 
urple marked 
Tinge of : 
Very slight | Blue-purple | Slight 
Blue-purple | Slight le air 
-| Blue-purple Medium Very light | Very 
purple marked 
Purple Marked Very light | Very 
purpl ked 
Blue None Blue one 
lue None Blue None 
Blue Non Blue None 
SR ton’ nina 2 c 
Fal 
ttn at, +t, 
