EFFECTS OF SELECTION ON ALKALOIDS IN BELLADONNA. 19 
Taste VIIT.—Alkaloids, at two different stages, in the leaves of belladonna plants grown 
from cuttings from selected parents at Arlington, Va.—Continued. 
Alkaloidal content (per cent). Alkaloidal content (per cent). 
Lot and number. | pirst | Second | Average || 1ot and number. First | Second | Average 
stage, stage, for stage, stage, for 
Aug. 18. | Oct. 12. | season. Aug. 18. | Oct. 12. | season. 
Lot 7wio: Lot 343 
peea sey ee ee .516 . 688 . 602 1 ie A SB eis MI BSS OL G235 Pear 0. 623 
Game re dere: Bere yeas ees . 864 . 864 DFS eR oo . 539 0. 596 . 567 
Average...... . 516 . 776 . 646 Average...... . 581 - 596 . 588 
Lot 342: Lot 34; 
Soa ee ok BO Se oe ee . 636 - 636 1 SPREE SEE EE: .514 . 439 . 476 
Base Nie raat aR - 499 391 - 445 24D SR pee Nea . 458 - 440 449 
ASR eg Suh so gh fines ee . 598 - 525 . 562 ————— | cq“ qc 
ee meant . 558 - 408 . 483 Average...... - 486 . 440 - 463 
CDs ac nlc . 601 . 590 . 596 
Average...... . 564 .510 OST 
SUMMARY OF SEASONAL AND GROUP AVERAGES. 
Average alkaloidal 
content (per cent). 
islold 
Lot. yield o 
parent. Bis 
For season. (eoimlsaime 
parent. 
NE OLLG eee Pee ee hs ws reyes cig ek ote Se ice act ghee es) 0.532 
ILE EMIS Sigs ALS SRS SS cee Ge 5 SAN ee ee ONE i lll napa ees [er aa (0) EI eh 
Bok Gis eee ren ok op a poe de Eh ae es . 634 
O65 ON ohod shoo BESS SLE SES CN ree ne ee a eae ears St |e Os . 565 
IEG TOW ee eee ek Ee I pres GOR ees SUPA 0. 616 
LONE DiOscbe Se BSS SSSA AS SSCS cs cat a aS eee eae pei elena Rl os needa ienl nina Toenail 643 
LOR DOD Sa Cee RS SSS CESS SES eo aia le ttn er Ca re ry Pee (ORR BOR abe sera 648 
COTA GN ee ne ee SE ES ES Elan GO eee 649 
SE tar eee et et) ee oo RS (OKO) Re Terteae 581 
pot ZWe BOHR OSS SEES oo HAS BORE Slot Re are See magmee AE eerie ik Sedna Nn ea do OM oa 544 
Gb AW cn GBS kop SASS Se Soe ails ai lag Sateen sok tapes Mart iy Jule Ree Quine 575 
et eM ate ee Gurnee 677 0.610 
ZO LAAN ee er rycen eo A a ee Oa . 646 
INE Oe oa Sono ee Se OS A a ae te er a WOW eee ee 537 
FIG Gite 4s ee erento ner PS ee a ad cee cw cieclewcee dosse as 588 0. 529 
OB BYR ok Siig oa GSS ra Os eae Eat a ee GO aE ne 463 
Here, again, the plants from lots 6w and 7w show marked superiority 
over those of lot 34, the parent plant of which was poor in alkaloids. - 
These plants will be observed and studied carefully through another 
season, to determine whether the same relationship holds true, after 
which desired individuals will be selected and further propagated 
through cuttings. 
CONCLUSIONS. 
It having been established in the previous investigation that a wide 
range of variation exists in the alkaloidal content of belladonna 
plants, the present investigation was undertaken to determine 
whether the characteristic of alkaloid production is transmissible to 
