 | Academy of Natural Sciences of Philadelphia - 1877 - 572 หน้า
...members ; no new members have been elected during the past year. Nine monthly meetings have been held during the year, at which there has been an average attendance of seven members. The meetings of the Section are held on the second Friday of each month, excepting in... | |
 | Franklin Institute (Philadelphia, Pa.) Electrical Section - 1892 - 482 หน้า
...Balance on hand, January i, 1893 $8 87 Meetings. — One special and ten regular meetings have been held during the year, at which there has been an average attendance of twenty-six. At the regular meeting of May, the Section's By-Laws were amended by changing the time... | |
 | 1893 - 580 หน้า
...Balance on hand, January I, 1893 $8 87 Meetings. — One special and ten regular meetings have been held during the year, at which there has been an average attendance of twenty-six. AT the regular meeting of May, the Section's by-laws were amended by changing the time... | |
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Balance on hand, January i, 1893 $8 87 Meetings. — One special and ten regular meetings have been held during the year, at which there has been an average attendance of twenty-six. At the regular meeting of May, the Section's By-Laws were amended by... 