Mohawk and Hudson Railroad Receipts. 1-79. pounds raised one foot high in “one minute is added.’ It will’be. necessary to add a few words" respecting the convstriuction of this column. . In -order to compare these experiments with each other,» these'resultsniu‘st be reduced to a common standard of comparison, and it is very convenient to express the results of such experiments by th‘e pounds raised one foot high in one minute, this being the method of estimating horses’ power.-— The number: is in each case obtained in-the following manner. I will take the firstexperirnent. It ~ r » , « Here 1050 lbs. was raised 16;-"feet high in 90”; this is equivalentto (1050 X 16'5.=) 17325 lbs. raised onefoot high in 90". which is equivalent to (l7325+l'5==) 11550 lbs. raised one foot high in one minute In this -case then _ the man's poWer=l1550. The same calculations being pursued in the other cases, give the num- bers constituting thelast column of the following table; N fstatical W . h ' o o resist- elw t Time Time ’ _ . ‘ "d ' - REMARKS. Man 8 exper ance at raise . in _1n power, tmem. handle. lsecondslminutes. I 10 1050 ' 90 I 1'5 Easily by a stout Englishman 11550 II 15 1575 135' 225 Tolerably easilyby thesameinan 11505 Ill 20 2100 120 2 Not easily by a sturdy Irishman 17325 IV 25 2625 150 2'5 Withdiflicultyby astoutEng’man 17329 V 30 3150 150 25 With difficulty by a Londonman -20790 VI 35 3675 132 2-2 Wfihthe “““°S‘ 27562 t _ do. by a London man same ~ ’ VII """ 150 t 25 - as Experiment Vi 24255 0 VIII . 170 283 With extremelaborbytallIrishrn’n 21427 i I '« With very great exertion by :1 IX‘ ll """ " 180 ‘I 3 sturdy Irishmansa'measEx. III V 202.”; X ...... .. 243 405 With utmostexertion by Welshrn‘n [5134 XI .... ... 35 . Given up this time by an Irishm’n, .... .. VVe may consider Experiment IV as giving a near approximation to the maximum power of a man for two minutes and a half; for in all the succeeding experiments the man was so exhausted as to be unable to let down the weight. The greatest effect produced was that in Experiment VI. This, when the friction of the machine is taken into the account, is fully equal to a horses’ power, or 33,000 lbs. raised one foot high in one minute. Thus, it appears, that a very powerful man, exerting himselfto the utmost for two minutes, comes upto the_ constant power of a horse, that is, the power which a horse can exert for eight hours per day. LcLmbeth,Mcty, 1826. JOSHUA FIELD._ Trans. I-nszf. C. E. MOHAWK AND xruoson nximoxn RECEIPT FOR 1839. Receipts from passengers, $116564‘ 95‘ do do ' freight and U. S. mail,’ ($4688) 33.343 87?- ei?o,513 os Expenditures, for horse, locomotive and steam stationary , power, including incidental expenses, (exclusive of $7000 interest on loan of $100,000 borrowed,) 08.055 27 Equal‘ to near 7,} per cent. on $1,l00,000,———cost of the road. ‘$813457 31