Be 
PPe Price 
LUEDEKING, C., On the Analysis of tho Barium Group. 
HITCHCOCK, A.S., Catalosue of the Anthophyta and 
Pteridophyta of Ames, Iowa. 
DUFFY, J.C., Transformations of a Carabid, etc. 
PAMMEL., L.H., On the Sesc-Coats of the Genus Euphore 
bia 
ROBERTSON, CHARLI3, Flowers and Insects, Asclepiada- 
cees to Scrophularisecese. 
PRITCHETT, H.S., A Fermula for Predicting the Popula- 
tion of the United States. 
RITCHETT, H.S., Observations of the Transit of Mercury, 
May 9. 1891. 
veboas, AeW., On Some New Sedalia Trilobites. 
NIPHER, FRANCIS E.,On Certain Properties of a Field of 
Force Due to a Single MadSscisseosecvvevenrcceseoess eve BOO MeO 
VOLUME VI 547 5.90 
No. l. es Hede,y ADRODHSE to catalogue of flora of 
oaeeseoeee 48 sed 
ce ENGLER, “RDMUND re A “Geometrical Construction 
for Findine the Foci of the Sections of a Cone 
of Bess lit tae. ai es . sees * Sane te eee 9 02d 
3. WINSLOW, ARTHUR, The Mapping of i saawrd ss vices 45 250 
4. ROBERTSON , CHARLES, Flowers and Insects - 
Labiatae..... vee Seve e 33 200 
Se HIT ee ey Ses The “Opening of “the "Buds “of Some 
Woody PISHCS cine eoecenoerercseseseeensese 19 s25 
6. BAY,’ Js meer ers Materials for a Monorraph on 
Inuline. ; cee ee ee 12 225 
7. PORTER, i POWUNSE aD, “The "Physical “Basis of Pre- 
cocity and Duliness.....- oe eee ee ee ee eee 22 25 
8. ENGLER, EDMUND A. Geometrical Construction for 
Cutting from a Gone of Revolution Plane Sections 9 020 
9. PA'MEL, L.H., Sclorotinia Libortiana, Fuckel, 
with a *Bibliopranhy of Funsus Root Diseasose.es 43 200 
10. PORTER, WM. TOWNSEND, The Relation between the 
Growth of Children and Their Deviation from 
bee dys Type of Their Sex and Agc...serseevcce 19 020 
ll. HURTER, JULIUS, Catalogue of Reptiles and 
Batrachians Found in Vi cinity of St. Louis, Mo, 15 025 
12. PORTER, WM. TOWNSEND, The Growth of St. Louis 
Childron...e.s cee “tee vue cee 165 1.00 
13. GLATFELTER, N. M., “Study of "Salix “Nigra and S, 
Amyedaloides with Hybride..+ciseyectsuesseuives 9 025 
14. ROBERTSON, CHARLES, Flowers and Insects. 
Rosaceac and Compasiteaas,..»:; eet one 47 200 
15. UPDEGRAFF, MILTON, Long*sude, Latitude, ‘and 
Height of Laws Observatory, University of 
Roe ath: ut ae eer ay nee ee ee ee eA 58 «00 
16. RUNGD, EDWARD C., Merycism Regarded in the Light 
of Atavic Tendency. Report of New Casee...eeee 1 yee 
17. CUSHMAN, ALLERTON S., The Post-Mortem Detection |... 
and Estimation oF A a er oe ee 
