XIV Journal of Agricultural Research voi. v 



" Page 



Plate XLVIII. Fig. i. — Chains of Bacterium lachrymans from 14-day-old 

 culture in salted bouillon. Fig. 2. — Capsules of Bact. lachrymans from 

 young agar culture. Fig. 3. — Flagella of Bact. lachrymans from 24-hour-old 



agar slant 476 



Plate XLIX. Fig. i. — Young surface colonies of Bacterium lachrymans on 

 agar poured plate, showing opaque center and lines radiating into the 

 thinner margin. Fig. 2. — Surface colonies of Bact. lachrytnans on gelatin 

 poured plate. Fig. 3.- — Gelatin stab culture of Bact. lachrymans, kept at 

 20° C. and photographed at the end of 12 days 476 



Biology of Apanteles militaris 



Plate L. Apanteles militaris: Fig. 1. — Diagrammatic drawing showing the 

 embryo inclosed by the fused amniotic and serosal envelopes. Fig. 2. — 

 Diagrammatic drawing showing the fused envelopes dividing into their 

 two parts, the serosal cells being grouped at each pole. Fig. 3. — Diagram- 

 matic drawing showing the egg ready to hatch, the serosal cells having 

 become a loose mass and the embr^-o straightened out in the egg. Fig. 4. — 

 Diagrammatic drawing of the larva during its first molt. Fig. 5. — First 

 instar. Fig. 6. — Second instar. Fig. 7. — Third instar, showing the posi- 

 tion of the spiracles and the caudal vesicle withdra%vn 508 



Cherry and Hawthorn Sawfly Leaf Miner 



Plate LI. Fig. i. — Leaves of English Morello cherry, showing injury by the 

 sawfly leaf miner. Fig. 2. — Leaves of hawthorn, showing injury by the 

 sawfly leaf miner 528 



Petrography of Some North Carolina Soils and Its Relation to Their 

 Fertilizer Requirements 



Plate LII. Fig. i. — Photomicrograph of Porters soil of the Appalachian, No. 

 5 sand. Fig. 2. — Photomicrograph of Cecil soil of the Piedmont Plateau, 

 No. 5 sand 582 



Hourly Transpiration Rate on Clear Days as Determined by Cyclic 

 Environmental Factors 



Plate LIII. General view of the water requirement and transpiration experi- 

 ments at Akron, Colo., on July 8, 1913 650 



Plate LIV. Fig. i.— V/lieat on automatic balances in the screened inclosure, 

 July 3, 1912, showing the exposure and arrangement of the 1912 experi- 

 ments. Fig. 2.— Automatic balances A, B, and C; A and C carry pots of 

 cowpeas and B carries the evaporation tank 650 



Plate LV. Fig. i.— A pot of alfalfa showing the growth and size of plants 

 used in the transpiration experiments. Fig. 2. — A pot of Amaranthus 

 retroflexus of the type used in the transpiration measurements. Fig. 3. — 

 Evaporation tank mounted on automatic balance 650 



Effect op Elemental Sulphur and op Calcium Sulphate on Certain 

 of the Higher and Lower Forms of Plant Life 



Plate LVI. Fig. i .—Red-clover plants, showing the effect of treatment with 

 calcium sulphate. Fig. 2. — Group A , untreated; B, o.i per cent of calcium 

 sulphate added to Miami silt-loam soil; C, 0.02 per cent added; D, 0.05 

 per cent added; E, o.i per cent added 780 



