AO THe Ottawa NATURALIST. -[May 
TABLE No. II. 
Coprinus comatus—Analysis of Umbrellas and Stalks. 
Freshly Gathered Mushrooms. Water-free Substance. | 5 = 
fag 
Crude Protein. Crude Protein. 15 ne 8 
== Water SS cee !Ash, -———| Ash.| 70 o-3 
Albumin-| y des Albumin-| , des Hews 
oids. pee See oids. a0 oA 
a. Umbrella 91.97 2.10 ely, Seo) 1H sis 18.30 | 8.84 58.8 
Staller ee 5|nQ257/2 ET gi) ell oazy || Oaks) 16.34 |10.58 39.2 
b. Umbrella} 92.82 1.55 1-45 |)-92 |, 20-58 20.20 |I11.42 55:0 
Stalk. ...| 91.73 1.45 -90), | .69)|) 172153 7.98 |10.75 60.1 
These data are not, we regret to say, in all particulars thor- 
oughly satisfactory, yet they may safely be considered as indicating 
that the umbrella is decidedly richer in albuminoids than the stalk, __ 
though the difference becomes less as the mushroom matures. 
They would further seem to show that as growth advances the 
umbrella decreases slightly in its nitrogen content while there is a 
concomitant increase in the value of the stalk. 
Our work with Coprinus atramentarius, the Grey Coprinus or 
true Ink-cup, has not been so extensive as that with C. comatus, 
yet it may be of interest to insert for comparison with the data of 
Table 1, a recent analysis made by us of this most excellent mush- 
room collected in its edible condition : 
Analysis of CopRINUS ATRAMENTARIUS. 
Constituent. Fresh Material. | Water-free Substance. 
Wiaten ns aoe eee Sao ci 93-31 = 
Albuminoids) ae pelt eae eee 1.02 15-43 
IN TNTGL E'S iiceroce cron ay Cc tetne nemo yee ee 71 10.74 
ASH iis eee uae «aa ae erte eee Sf] ; 1I.49 
Percentage of Crude Protein present as Albuminoids, 59.9. 
