96 THE UNITED STATES GEOLOGICAL SURVEY. [bull.227. 
Publications of the United Slates Geological Survey, by years — Continued. 
1887. 
9 bulletins (37, 38, 39, 40, 41, 42, 43, 44, 45 i 
1 report on mineral resources (for 1886) 
1888. 
1 annual report (7th) 
2 monographs (XIII, XIV) 
3 bulletins (46, 47, 48) 
1 report on mineral resources (for 1887) 
1 special report (Johnson's iron regions of Louisiana and Texas) , 
1889. 
2 annual reports (8th and 9th) 
2 monographs (XV, XVI) 
8 bulletins (49, 50, 51, 52, 53, 54, 55, 56) 
1 special report (Digest of decisions concerning water) 
1890. 
1 annual report (10th) 
1 monograph (I) 
13 bulletins (57, 58, 59, 60, 61, 62, 63, 64, 66, 67, £8, 69, 70) 
1 report on mineral resources (for 1888) 
1891. 
2 annual reports (11th and 12th) 
2 monographs (XVII, XVIII) 1 
15 bulletins (65, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 91) 
1892. 
1 annual report (13th, part of) 
2 monographs (XIX, XX) 
10 bulletins (84, 85, 86, 90, 92, 93, 94, 95, 96, 99) 
1 report on mineral resources (for 1889-90) 
1893. 
2 annual reports (13th and 14th, parts of) 
2 monographs (XXI, XXII) 
16 bulletins (97, 98, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111 
112, 113) 
2 reports on mineral resources (for 1891-92; 
1894. 
1 annual report (14th, part of) 
2 monographs (XXIII, XXIV) '. 
9 bulletins (114, 115, 116, 117, 118, 119, 120, 121, 122) 
1 report on mineral resources (for 1893) 
14 geologic folios (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14) 
1895. 
2 annual reports (15th and 16th, part of) 
3 monographs (XXV, XXVI, XXVIII) 
8 bulletins (123, 124, 125, 126, 128, 129, 131, 133) 
1 report on mineral resources (for 1894) 
8 geologic folios (15, 16, 17, 18, 19,20,21,22) 
Printed pages. 
Plates and 
maps. 
1,073 
89 
821 
1,894 
89 
676 
71 
671 
47 
315 
3 
839 
54 
1 
2, 555 
122 
1,826 
164 
731 
233 
960 
37 
59 
3, 576 
920 
98 
458 
52 
1, 219 
36 
659 
3, 256 
2,463 
242 
802 
116 
3,496 
6, 761 
46 
247 
2 
989 
45 
1, 792 
68 
679 
3,707 
115 
1,206 
183 
531 
30 
2, 262 
165 
1,494 
5, 493 
37b 
617 
73 
413 
47 
1,194 
23 
818 
73 
61 
3,115 
204 
1,377 
91 
1, 550 
170 
1,039 
45 
1,415 
29 
36 
32 
Qfi7 
