2 $4< Dr. Herschel’s Astronomical Observations 
14. Of extended Nebulce. 
This class of nebulas, which are chiefly extended in length, 
but at the same time have a considerable breadth, is very nu- 
merous. I have divided the nebulae it contains, which are 
284, into five assortments as follows.* 
II. 514 is “ A faint nebula extended fropi south-preceding 
“ to north- following ; it is about 2' long and i' broad." See 
fig. 8. 
III. 523 is “ A very faint nebula extended from south-pre- 
“ ceding to north-following ; it is 3 or 4' long and nearly 3' 
“ broad." 
* See one hundred and sixty -one extended nebula of various small sizes. I. 80, 89, 
194, 202, 234. II. 14, 53, 72, 82, 108, 133, 145, 164, 206, 260, 262, 278, 280, 305, 
348, 414, 436, 437, 486, 507, 520, 522, 574, 585, 611, 627, 638, 642, 649, 668, 682, 
696, 700, 723, 731, 742, 772, 785, 786, 802, 809, 810, 826, 830, 831, 835, 837, 844, 
84 7, 853, 859, 885. III. 4, 23, 56, 58, 65, 66, 73, 79, 82, 100, 1 10, 132, 183, 218, 
225, 236, 241, 242, 244, 248, 258, 265, 305, 313, 314, 316, 342, 347, 348, 355, 369, 
370, 406, 410, 419, 427, 429, 441, 442, 445, 450, 479, 487, 490, 494, 496, 499, 510, 
514, 515, 520, 521, 528, 554, 557, 567, 569, 570, 586, 598, 599, 601, 612, 613, 619, 
646, 649, 653, 677, 681, 682, 713, 714, 727, 730, 732, 752, 767, 77 1, 778, 783, 792, 
804, 806, 808, 811, 812, 813, 816, 832, 845, 846, 874, 885, 892, 904, 914, 920, 929, 
932,942, 948, 949, 973. 
Sixty-two extended nebula of various large sizes. I. 14, 20, 76, 141, 189, 212, 
215, 220, 253. II. 3, 17, 23, 63, 1 1 3, 126, 134, 147, 152, 156, 165, 188, 221, 235, 
251, 300, 326, 335, 344, 355, 378, 407, 453, 492, 525, 548, 566, 579, 595, 607, 619, 
628, 671, 687, 703, 750, 755, 762, 799. III. 253, 282, 290, 346, 414, 492, 498, 
508, 610, 689, 740, 766, 7^6, 921. 
Thirty one extended nebula from ^ to 2' long. II. 150, 181, 222, 237, 365, 479, 
510,-514, 535, 582, 624, 654, 655, 674, 763, 798, 807, 829, 881, 897, 899, 901, 
III. 203, 368, 506, 556, 620, 648, 692, 906, 907. 
Twenty-four extended nebula from 2 to 5' long. I. 94, 174, 201. II. 227, 284, 
291, 402, 432, 490, 536, 558, 600,-664, 747, 784, 900. III. 362, 523, 524, 553, 
603, 710, 7x1, 717. 
Six extended nebula from 5/015' long. I. 134, 153, 285. II. 824. V. 5, 23. 
