VIII Journal of Agricultural Research voi. iii 



Page. 

 Plate XXVIII. Fig. i. — Young orchard tree with severe attack of rosette. 

 Fig. 2 . — Rosetted pecan tree cut off to the stump the preceding season , with 

 the present season's growth again distinctly showing rosette. Fig. 3. — 

 Two seedling pecan trees planted the same day from the same lot of seed- 

 lings 174 



ApplB Root Borer 



Plate XXIX. Figs, i and 3. — Sections of an apple root, showing burrows of 

 the apple root borer {Agribts mttaticollis) . Fig. 2. — Cross section of the 

 trunk of a young apple tree, showing burrows made by the larvse of the 

 apple root borer in ascending the trunk to pupate 186 



Plate XXX. Fig. i. — Agrilus vittaiicollis: I,arva(i;), pupa (6), and adult(a) of 

 the apple root borer in the pupal cell. Fig. 2. — Xylophruridea agrili, a 

 common parasite of the apple root borer. Fig. 3. — Section of trunk of 

 young service tree, showing below the white egg and above the exit hole 

 of the apple root borer. Fig. 4. — Xylophruridea agrili: Larvae of the para- 

 site; one feeding on the larva and the other in the pupal cell of its host . . . 186 



Plate XXXI. Fig. i. — Agrilus vittaiicollis: Egg on trunk of young service 

 tree. Fig. 2. — Agrilus vittaticollis : Feeding form of larva. Fig. 3. — 

 Agrilus ■vittaticollis: Contracted form of larva as taken from pupal cell. 

 Fig. 4. — Agrilus vittaticollis: Pupa. Fig. 5. — Agrilus vittaticollis: a. Adult, 

 or beetle; b, claw; c, antenna. Fig. 6. — Xylophruridea agrili, a parasite 

 of the apple root borer: Pupa 186 



Coloring Matter op Raw and Cooked Salted Meats 



Plate XXXII. Fig. i. — Oxyhemoglobin, ox blood. Fig. 2. — Oxj'hemoglobin , 

 ox blood. Fig. 3. — NO-hemoglobin, ox blood. Fig. 4. — Methemoglobin, 

 ox blood. Fig. 5. — Methemoglobin, ox blood 226 



Plate XXXIII. Fig. i. — Oxyhemoglobin, sheep blood. Fig. 2. — Oxyhemo- 

 globin, sheep blood. Fig. 3. — NO-hemoglobin, sheep blood. Fig. 4. — 

 NO-hemoglobin, pig blood. Fig. 5. — NO-hemoglobin, pig blood 226 



Identification of the Seeds of Species of Agropyron 



Plate XXXIV. Agropyron repens: Spikes showing degrees of variation which 



may occur. A , Typical spike 282 



Plate XXXV. Agropyron smithii: Spikes showing degrees of variation. A, 



Tj'pical spike 282 



Plate XXXVI. Agropyron tenerum: Spikes showing degrees of variation. A, 



Typical spike 282 



Plate XXXVII. A^ro/^yron spp.: Typical seeds and spikelets. Fig. i. — Agro- 

 pyron repens. Fig. 2. — Agropyron smithii. Fig. 3. — Agropyron tenerum . . 282 



Observations on the Life History of Agrilus Bilineatus 



Plate XXXVIII. Fig. i. — Agrilus bilineatus: Eggs in position in, the bark of 

 an oak tree. Fig. 2. — Agrilus bilineatus: Cluster of newly laid eggs. Fig. 

 3. — Agrilus bilineatus: Eggs shortly before hatching. Fig. 4. — Agrilus , 

 bilineatTis: Newly hatched lar\'a. Fig. 5. — Agrilus bilineatus: Mature larva. 

 Fig. 6. — Agrilus bilineatTis: Larva in its cell. Section made perpendicu- 

 lar to the surface of the bark. A, Point at which adult will emerge; B, 

 burrow stopped with frass. Fig. 7. — Agrilus bilineatus: Pupa in cell. Sec- 

 tion made parallel to the surface of the bark. Fig. 8. — Agrilus bilineatus: 

 Adult female. Fig. 9. — Agrilus bilineatus: Adult male 294 



