20 Scientific Works published by Longmans, Green, & Co. 



ASTRONOMY, NAVIGATION, ETC. 



ABBOTT. ELEMENTARY THEORY OF THE TIDES: 



the Fundamental Theorems Demonstrated without Mathematics and the In- 

 fluence on the Length of the Day Discussed. By T. K. ABBOTT, B.D., Fellow 

 and Tutor, Trinity College, Dublin. Crown 8vo. , 2s. 



BALL. Works by Sir ROBERT S. BALL, LL.D., F.R.S. 



ELEMENTS OF ASTRONOMY. With 130 Figures and Dia- 

 grams. Fcp. 8vo. , 6s. 6d. 



A CLASS-BOOK OF ASTRONOMY. With 41 Diagrams. 



Fcp. 8vo., is. 6d. 



DE CAMPIGNEULLES. OBSERVATIONS TAKEN AT 



DUMRAON, BEHAR, INDIA, during the Eclipse of the 22nd January, 1898, 

 by a Party of Jesuit Fathers of the Western Bengal Mission. By the Rev. V. 

 DE CAMPIGNEULLES, S.J. With 14 Plates. 410., los. 6d. net. 



GILL. TEXT-BOOK ON NAVIGATION AND NAUTICAL 



ASTRONOMY. By J. GILL, F.R.A.S., late Head Master of the Liverpool 

 Corporation Nautical College. 8vo. , IDS. 6d. 



GOODWIN. AZIMUTH TABLES FOR THE HIGHER 



DECLINATIONS. (Limits of Declination 24 to 30, both inclusive.) 

 Between the Parallels of Latitude o and 60. With Examples of the Use of 

 the Tables in English and French. By H. B. GOODWIN, Naval Instructor, 

 Royal Navy. Royal 8vo. , js. 6d. 



HERSCHEL. OUTLINES OF ASTRONOMY. By Sir JOHN 



F. W. HERSCHEL, Bart., K.H., etc. With 9 Plates and .numerous Diagrams. 



8VO. , 12S. 



JORDAN: ESSAYS IN ILLUSTRATION OF THE ACTION 



OF ASTRAL GRAVITATION IN NATURAL PHENOMENA. By 

 WILLIAM LEIGHTON JORDAN. With Diagrams. 8vo. , 9^. 



LAUGHTON.KN INTRODUCTION TO THE PRAC- 

 TICAL AND THEORETICAL STUDY OF NAUTICAL SURVEYING. 

 By JOHN KNOX LAUGHTON.M. A.,F.R. A.S. With 35 Diagrams. Crown 8vo., 65. 



LOWELL. MARS. By PERCIVAL LOWELL, Fellow American 



Academy, Member Royal Asiatic Society, Great Britain and Ireland, etc. 

 With 24 Plates.. 8vo., 125. 6d. 



MARTIN. NAVIGATION AND NAUTICAL ASTRONOMY. 



Compiled by Staff Commander W. R. MARTIN, R.N. Royal 8vo., i8s. 



MERRIFIELD.K TREATISE ON NAVIGATION. For 

 the Use of Students. By J. MERRIFIELD, LL.D., F.R.A.S., F.M.S. With 

 Charts and Diagrams. Crown 8vo. , 5^ 



