TWENTY-SEVENTH ANNUAL MEETING. 1^15 



folded in. Contains besides the report of the superintendent, Appendix No. 6. 

 The Geographical Distribution and secular variation of the magnetic dip 

 and intensity in the United States, by Charles A. Schott, Assistant; pp. 

 129-274; pll. 21-24. No. 8. Geographical Positions of Trigonometrical points in 

 the states of Massachusetts and Rhode Island, determined by the United 

 States Coast and Geodetic Survey between the years 1835 and 1885, including 

 those determined bj^ the Borden Survey in the years 1832 to 1838, by Charles A. 

 Schott, Assistant; pp. 441-467; pll. 25, 26. No. 10. On Geodetic Reconnaissance, 

 by Charles O. Boutelle, Assistant; pp. 469-481; pll. 27, 28. No. 13. On the Har- 

 monic Analysis of the tides at Governor's Island, New York Hai'bor, by Wil- 

 liam Ferrel; pp. 489-493; pi. 35. 



Report for the year ending June, 1886. 1887. Pp. 476; pll. 18-39; 17 maps 

 folded in. Contains besides the report of the superintendent. Appendix No. 7. 

 An examination of some of the early voyages of discovery and exploration on 

 the northwest coast of America from 1539-1603, by Prof. George Davidson; 

 pp. 155-253; pi. 18. No. 9. Report of changes in the shore-line and beaches of 

 Martha's Vineyard, as derived from comparison of recent with former sui- 

 veys, by Henry L. Wliiting, Assistant; pp. 263-266; pi. 21. No. 10. A report on 

 the Delta of the Delaware, by Henry jNIitchell, Assistant; pp. 267-279; pi. 22. 

 No. 11. A report of Gulf Stream explorations: Observations of currents, 

 1886, by Lieut. J. E. Pillsbury, U. S. N., Assistant; pp. 281-290; pll. 23-28. No. 12. 

 The secular variation of the magnetic declination in the United States and for- 

 eign stations (sixth edition— greatly enlarged), by Charles A. Schott; pp. 291- 

 407; pll. 29-33. No. 13. On the circulation of the sea through New York Harbor, 

 by Henry Mitchell, Assistant; pp. 409-433; pll. 35-39. 



Report for the year ending June, 1S87. 1889. Pp. 552; pll. 31-49; 30 

 maps folded in. Contains besides the report of the superintendent, Appendix 

 No. 7. Fluctuations in the level of Lake Champlain and average height of 

 its surface above the sea, by Charles A. Schott, Assistant; pp. 165-172; pi. 33. 

 No. 8. Gulf-stream explorations: Observations of Currents, 1887, by Lieut. J. E. 

 Pillsbury, U. S. N., Assistant; pp. 173-184; pll. 34-42. No. 10. The magnetic 

 work of the Greeley Arctic Expedition, by Charles A. Schott, Assistant; pp. 

 207-210. No. 15. Report on the results of the physical surveys of New York 

 Harbor, by Henry Mitchell, Assistant; pp. 301-311; pll. 44-49. No. 16. A Bib- 

 liography of Geodesy, by J. Howard Gore; pp. 313-512. 



Report for the year ending June, 1888. 1889. Pp. 584; pll. 19-60; 18 maps 

 folded in. Contains beside the report of the superintendent. Appendix No. 6. 

 Part I. — The value of the "Arcano del Mare" with reference to our knowl- 

 edge of the magnetic declination in the earlier part of the 17th century, by 

 Charles A. Schott, Assistant; pp. 167-170. Part II.— Historical review of the 

 work of the Coast and Geodetic Survey in connection with terrestrial mag- 

 netism; pp. 171-176; pll. 19, 20. No. 7. The secular variation of the magnetic 

 declination in the United States and foreign stations (seventh edition), by 

 Charles A. Schott; pp. 177-312; pll. 21-25. Nos. 10-12. Heights from spirit- 

 leveling of precision between points in the south; pp. 409-464. No. 13. Differ- 

 ential method of computing the apparent places of stars for determinations of 

 latitude, by E. D. Preston, Assistant; pp. 465-470. No. 14. Determinations of 

 latitude and gravity for the Hawaiian Government, by E. D. Preston; pp. 

 471-563; pll. 39-60. 



Report for the year ending June, 1889. 1890. Pp. 536; pll. 19-50; 18 maps 

 folded in. Contains besides the report of the superintendent. Appendix No. 6. 

 The relation between the metric standards of length of the United States 

 Coast and Geodetic Survey and the United States Lake Survey, by C. A. 

 Schott and O. H. Tittmann; pp. 179-197; pi. 19. No. 7. The need of a re- 

 measurement of the Peruvian arc, by Erasmus D. Preston, Assistant; pp. 

 199-208. No. 10. Report on the measurement of the Los Angeles base line, 

 Los Angeles and Orange counties, Cal., by George Davidson, Assistant; pp. 

 217-231; pll. 20-23. No. 11. The Distribution of the magnetic declination in the 

 United States for the epoch 1890, by Charles A. Schott, Assistant; pp. 233-402; 

 pll. 24-27. No. 16. Gulf Stream Explorations: Observations of currents in 

 1888 and 1889, by Lieut. J. E. Pillsbury, Assistant; pp. 467-477; pll. 31-50. 



Report for the year ending June, 1890. 1891. Pp. 810; pll. 21-71; 20 maps 

 folded in. Contains besides the report of the superintendent. Appendix Nos. 

 8, 9. Results of the observations made at the U. S. Coast and Geodetic Survey 

 Magnetic Observatory between the years 1882 and 18S9. Part I.— Results in the 



