 | Beriah Stevens - Arithmetic - 1822 - 436 pages
...calendar months ; the number of days in each of which, may be remembered by the following verse : Thirty days hath September, April, June and November ; February...twenty-eight alone ; all the rest have thirty-one. The 6 hours, in the space of 4 years, make a day, and is accordingly every fourth year added to February... | |
 | Nathan Daboll - Arithmetic - 1823 - 262 pages
...7 days, 1 week, «.*. 4 weeks, I month, mo 13 months; 1 day and 6 hours, 1 Julian year, yr. Thirty days hath September, April, June, and November, February twenty-eight alone, all the rest haveThirty-one. Tx. B. la bissextile, or leap year, February hath 9.9 Jays. 12. circular Motion. 60... | |
 | Nathan Daboll - Arithmetic - 1825 - 248 pages
...il. 7 days, 1 week, ic. 4 weeks, I mouth. mo 13 months, 1 day and 6 hours, 1 ¿ulian year, yr. Thirty days hath September, April, June, and November, February...all the rest have thirty-one. NB In bissextile, or leap year, February hath 29 iaysr.12. circular Motion. €0 seconds ('•) make 1 minute, » 60 minutes,... | |
 | Daniel Adams - Arithmetic - 1828 - 286 pages
...in each month may be easily fixed in the mind by committing to memory the following lines : Thirty days hath September, April, June, and November, February...twenty-eight alone ; All the rest have thirty-one. The first seven letters of the alphabet, A, B, C, D, B, F, G, are used to mark the several days of... | |
 | Nathan Daboll - Arithmetic - 1829 - 252 pages
...week, w. month, mo, £4 hours, 7 days, 4 weeks, 13 months, 1 day and 6 hours, 1 Julian year, yr. T'liny days hath September! April, June, and November, February twenty-eight alone, all the rest hava thirty-one. NB In Bissextile, or leap year, February hath 2У days. 12. Circular Motion. 60 seconds... | |
 | Nathan Daboll - Arithmetic - 1829 - 268 pages
...7 days, 1 week, w. 4 weeks, 1 mo ith, OlOt 13 months, I day and 6 hours, I Julian year, yr. Thirty days hath September, April, June, and November, February twenty-eight alone, all the i'-s' have thirty-one. NB In bissextile, or leap year, February hath 29 days. 12. Circular Motion.... | |
 | Daniel Adams - Arithmetic - 1830 - 280 pages
...in each month may be easily fixed in die mind by committing to memory the following lines : Thirty days hath September, April, June, and November, February...twenty-eight alone ; All the rest have thirty-one. The first seven letters of the alphabet, A, B, C, D, E, I', O, tre used to mark the several days of... | |
 | Daniel Adams - Arithmetic - 1830 - 294 pages
...in each month may be easily fixed in the mind by committing to memory the following lines : Thirty days hath September, April, June, and November, February...twenty-eight alone; All the rest have thirty-one. 60 seconds (s.) - make 1 minute, marked 1 hour, - - - 1 day, - - - 1 week, - - - ' 1 month, - - - 1... | |
 | Daniel Adams - Arithmetic - 1831 - 276 pages
...in each month may be easily fixed in the mind by committing to memory the following lines : Thirty days hath September, April, June, and November, February...twenty-eight alone ; All the rest have thirty-one. REDUCTION. 81 The first seven letters of the alphabet, A, B, C, D, E, F, G, are used to mark the several... | |
 | Catharine Esther Beecher - Arithmetic - 1833 - 296 pages
...days, * 1 week, w. 4 weeks, > 1 month, no. 13 months, 1 day and 6 hours, I Julian year, yr. Thirty days hath September, April, June, and November, February twenty-eight alone, all the rest have thirty one. NB In bissextile or leap-year, February hath 29 days. 11. Circular Motion. 60 seconds (")... | |
| |
Thirty days hath September, April, June and November ; February twenty-eight alone, all the rest have thirtyone. 
