X Journal of Agricultural Research voi. iii 



Page. 



Plate XLVIII. Fig. i. — Type II double-yolked egg, showing two yolks with 

 some separate and some common thick albumen envelopes. Fig. 2. — 

 Type III double-yolked egg, showing two yolks with all the thick albumen 

 separate 386 



Plate XLIX. Fig. i. — Shell of type III double-yolked egg, which shows' 

 external evidence of its double nature by a scam in the shell. Fig. 2. — 

 The inside of the shell shown in figure i , showing the fold of egg membrane 

 which projected between the two component eggs 386 



Plate L. Oviduct removed from a laying bird and cut open along the point 

 of attachment of the ventral ligament. A, Funnel; B, albumen-secreting 

 region; X , isthmus ring; C, isthmus; D, shell gland; and £, vagina 386 



Plate LI. Fig. i. — Ovary of a pullet, showing the follicles which produced 

 the yolks for the double-yolked egg shown in Plate XLVIII, figure i. 

 Fig. 2. — Ovary of a pullet, showing follicles which produced the yolks for 

 a double-yolked egg similar in structure to the one shown in Plate XLVIII, 

 figure 2 386 



Plate LII. Fig. i. — Ovary of a pullet, showing a series of resorbing follicles, 

 two of which (probably C and C) produced the yolks for the double-yolked 

 egg shown in Plate XLVI, figure 3. Fig. 2. — Ovary of a bird, showing 

 the two largest resorbing follicles, one of which produced the yolk witli 

 two germ disks shown in Plate XLVI, figure i 386 



Brachysm, a Hereditary Deformity op Cotton and Other 



Plants 



Plate LIII. Abnormal simple leaf on fniiting branch of Egyptian cotton, 

 accompanied by abnormal leaf-like bract, remainder of involucre and 

 floral bud removed 400 



Plate LIV. Normal 3-lobed leaf of fruiting branch of Egyptian cotton, accom- 

 panied by normal involucral bract for comparison with Plate LIII 400 



Plate LV. Abnormal leaf of fruiting branch of Egyptian cotton with one 



stipule enlarged and the lobe of the same side wanting 400 



Plate LVI. Brachytic fruiting branches of "cluster" cotton (Willets Red 

 Leaf) shortened to a single intcmode by abortion of terminal bud. Fig. i. — 

 The boll at the right is borne by a very short branch from an a.xillary bud. 

 Fig. 2. — The boll at the right is borne by the shortened fruiting branch. 

 The left-hand boll represents a shortened branch in the axil of the leaf that 

 subtends the fruiting branch 400 



Plate LVI I. Normal and brachytic joints on same fruiting branch of Upland 



cotton 400 



Plate LVIII. Branches of abnormal variation of Upland cotton, with abortive 

 buds remaining attached to branches by dectirrent pedicels and elongated 

 bud scars. The left-hand branch shows abnormal inequality in the lengths 

 of the intemodes 400 



Plate LIX. Portion of brachytic fruiting branch of Simpkins cotton producing 



twin fasciated branches from an axillary bud 400 



Plate LX. Portion of fruiting branch of Columbia cotton, with one intemode 



adnate to the pedicel of the boll of the preceding intemode 400 



Plate LXI. Fig. i. — Plant of Dale Egyptian cotton, showing complete abor- 

 tion of fruiting branches on the main stalk, while the vegetative branches 

 of the same plant produced a few fruiting branches and ripened a few bolls. 

 Fig. 2. — End of main stalk of plant shown in figure i, showing abortion of 

 terminal bud and compensatory thickening of the petioles 400 



