1919] CONTENTS. VII 



Michigan Station — Continued. Page. 



Technical Bulletin 44, June, 1919 512 



Special Bulletin 92, December, 1918 74 



Special Bulletin 93, J'ebruary, 1919 43 



Special Bulletin 94, February, 1919 147 



Special Bulletin 95, E'ebruary, 1919 147 



Special Bulletin 96, May, 1919 443 



Special Bulletin 97, June, 1919 435 



Circular 36, February, 1919 46 



Circular 37, March, 1919 148 



Circular 38, March, 1919 148 



Circular 39, May, 1919 463 



Circular 40, June, 1919 479 



Quarterly Bulletin — 

 Volume 1 — 



No. 3, February, 1919 98 



No. 4, May, 1919 373,397 



Volume 2 — ■ 



No. 1, August, 1919 586, 587, 598 



Thirty-first Annual Report, 1918 630, 633, 636, 654, 660, 681, 698 



Minnesota Station : 



Bulletin 178, December, 1918 93 



Bulletin 179, November, 1918 91 



Bulletin 180, December, 1918 91 



Bulletin 181, March, 1919 745 



Bulletin 182, March, 1919 730 



Special Report Grand Rapids Substation, 1904-1914 386 



MissouEi Station : 



Bulletin 158, October, 1918 77 



Bulletin 161, January, 1919 356 



Bulletin 162, March, 1919 334 



Bulletin 168 (Annual Report, 1918), May, 1919 G22, 



623, 624, 626, 628, 636i> 644, 648, 652, G54, 657, 



660, 673, 674, 675, 676, 677, 680, 683, 694, 699 



Bulletin 164, August, 1919 691 



Circular 86, March, 1919 335 



Circular 87, April, 1919 340 



Circular 88, May, 1919 567 



Circular 89, August, 1919 692 



Montana Station : 



Bulletin 126, December, 1918 57 



Bulletin 127, December, 1918 39 



Circular 80, December, 1918 90 



Circular 81, December, 1918 29 



Circular 82, February, 1919 37 



Nebraska Station : 



Bulletin 171, May, 1919 638, 648, 652 



Bulletin 172, March, 1919 36 



Bulletin 173, July, 1919 770 



Research Bulletin 1.5, March 15, 1919 386 



Circular 7, June, 1919 370 



Thirty-second Annual Report, 1918 433, 495 



