CONFPENTS.° 
Page 
The relation of nicotine to the quality of tobacco -............22222222.222-- 5 
Variation in the nicotine content of tobacco...............-...-.--22--- 5 
Relation of total nicotine content to the quality of tobacco ------ pase ne 6 
Dutewent fosmis Gr micotine in tobacco... ..- ....-..-.......-...-.-.<-..- é 
Effects of fermentation and aging on the different forms of nicotine in 
Sokmeco ~~ 5.2. =<. ek ll a Ret e822 28S Oe as a ae ee ee 9 
Effects of organic acids on the nicotine content of tobacco. .........--.-. 11 
Eo es CS 13 
Sy wat Py Se ES Ee ae ee 16 
ae ae ee Se ee ee A ee 17 
ee ee ee he eo een 5 oo ee SILL 17 
The continued prevalence of the disease ---.-.----......--.----.------- 17 
eee mrinarinE SaNe ADI oo 2 hc ee ne ook end 18 
RIE OMe eo eee 5 or site. Sk he oe ce cece 19 
Specific germ involved---..--- SERIO EG RRS tthe eect meet Sata See 20 
nn Gr ememes OF LNG Pectenuim 22. 5... 2022. aon s ste ee ee ake 20 
II SEE GP ee oe oa eae Pee 3 3 21 
INN ea sd RS Se ee I ae Cs ain tei ee 24 
min verres peal ane tLe hisiory:. 5... 2. -2-.-22-.62..5. 22.22. 25 
Peery of sine Mlorida welyer, bean...-.2.-..2-.222-.-21.-25.2220-2. 25 
The identity of the Florida velvet bean .--...-....-.-.-----------.--.... 28 
| The importance of broad breeding in corn.-...----.--------.--------------- 33 
I ES Ee Se ee en See eee eee a 33 
Development of the present methods of corn breeding -.-.-----.--.----- 34 
ES ga a A a 3 
Confusion regarding the term uniformity ...-.--.-------.----.-.-..---- 36 
Cultural tendencies toward inbreeding. ----.----..--------.---...---..- oF 
yg ES a) Cd ee eee 41 
Continuous improvement through selection .--...-.-----------------.-- 41 
Oo eh ee Ree eS a Se ee ee ee 42 
The present status of the chestnut bark disease---..---- PR SE Pei eae aa 45 
i OL aee Coram, BAEK Gibease = 2-1 = 22 24. =~. 4-225 -- 62. +2 .e He 45 
ple te ee ae ee eee 45 
ES ESS TE ee le ee a 47 
oe ELA Be ge Pe pha oe 49 
How the further spread of the bark disease may be limited. --- -- ae 49 
By the inspection of diseased nursery stock ...--.-.-.---------- 49 
By the prompt destruction of diseased trees......-------------- 50 
By the treatment of diseased trees.......-.---- Kiet TS Se seme 50 
Cmnciumong= 2852-2 ee et ta SL ss Oe Seg oie ae 52 
eUNNRRCRNERE US OEE EEY Pome eerie ot Se a oe St ee eee So ssn 54 
be SS os Re ee a eee 5d 
a4The five papers constituting this bulletin were issued in separate form on Sep- 
tember 18 and August 31, 1908, and on May 19, June 4, and August 30, 1909, 
respectively. | 
141 . 3 
