FIELD RECORDS OF BREEDING WORK. 49 



iclentifiea by a distinctive name, as for example, in the case of the Connecticut 

 Sumatra strain, type. 2 ((Jreen leaf) ; iype, .'/ (Broad leaf). 



Selection m'mbers. — The individual plants selected for propa^Mtion should be 

 given numbers which will serve to identify them, as well as the type and the 

 genei-ation to which they belong. Each plant is represented by a combination 

 of nmnbcrs. the first one representing the series and usually corresponding to 

 the type in which the plant belongs. Each succeeding number represents the 

 individual parent plants in that generation, tiie last lK>iiig tlie number of the 

 individual selection in the last generation. For example, in the experiments 

 with tlie improvement of Connecticut Sumatra tobacco in the second generation 

 of selections the following lunnbers have been used: 1-5-G. The lirst inuuber 

 (1) refers to the series, and. in this case, to type 1 in the Connecticut Sumatra 

 .strain; the second inimber (.")) refers to the number of the seed plant selected 

 and used for i)lanting the second generation; the last number (6) refers to the 

 seed plant saved for planting the third generation selected from the crop raised 

 from plant Xo. 1-5; while 2-.')-S refer to a selection of the green leaf Coimecticut 

 Sumatra type, plant No. :'> of the first generation, and plant No. 8 of the second 

 generation selected from crop raised from No. 2-.*?. 



IlYBRii) NUMiiEKs. — The general jdan of assigning numbers to tobacco hybrids 

 is similar to the system followed in the selections except in the case of the type 

 number, which consists of a figure and a letter. The letter is added to the 

 figure in order to distinguish tlu' hybrids from the selections and may be used 

 to identify the individual hybrids (if simil.-ir parentage. A different type 

 number should be given to each series of hybrids, and a different letter to each 

 hybrid within the serie.s, as, for example, 41a, 41b, and 41c refer to individual 

 hyl)rids between Connecticut Havana and Connecticut Siujiatra ; 42a to hybrids 

 between Connecticut Havana and Connecticut Cuban, and 4.">;i to hybrids between 

 Connectic-ut Broadleaf and Connecticut Cuban, resi)ectlvely. The hybrid numbers 

 should not be duplicates of the selection numbex's. 



AssiGXME.NT OF NC-MBEHS. — lu Order to prevent confusion arising from using 

 the same numbers in different sections, it is proposed t;) assign certain numbers 

 to each natural center of breeding exi)eriments. These numbers should be 

 consulted before new numlters are given to types or hybrids. The numbers 

 from 1 to 100. inclusive, are assigned to the Connt'cticut Valley experiments ; 

 101 to 200, inclusive, to the Florida experiments, and 201 to 300. inclusive, 

 to the Maryland experiments. 



The names of the established varieties of cigar-wrapper tobaccos grown in 

 the Connecticut Valley are (1) Connecticut Havana; (2) Connecticut Broad- 

 leaf ; and the varieties introduced in an experimental way which are grown 

 to a limited extent under cloth shade are (1) Sumatra and (2) Cuban. A 

 number of distinct strains of Sumatra and Cuban varieties grown from im- 

 ported seed have been produced and are recognized as modified types of the 

 Sumatra and Cuban tobaccos, so that in order to distinguish these types from 

 the imported varieties they should be known as Connecticut Sumatra and 

 Connecticut Cuban tobaccos. The types which have been selected for experi- 

 mental purposes are as follows : Connecticut Simiatra type : 1. Crumple ; 2. 

 Greenleaf ; 3, Sumatra ; 4, Broadleaf ; 5, Belgian ; G, Abnormal ; 7, Smoothleaf ; 

 8, Freak ; 9, Mosaic ; 10. Mongrel ; 2.5. Holcomb Hollow ; 27, Resistant ; 28, 

 Diseased. Connecticut Cuban type : 11. Cuban ; 12. Dark Green ; 13, Havana ; 

 14, Freak. Cuban : 20, Imported Cuban. Connecticut Havana : 36, Cooley. 

 Connecticut Broadleaf: .50, Brewer; 55, Favorite. 



15507— No. 90—07 m 4 



