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Artesian well
~feJ~anics, ]Physics, and Chemistry.
110
thousand pounds of soap may be used in the course of a year, differences which cannot be deemed insignificant must exhibit themselves. :For example, the equivalent weights of several soaps (regarded as anhydrous), in common use, are as follows : - O l e i c a c i d ( r e d oil) s o a p , P a l m oil " Tallow " C o c o a - n u t oil "
~--.,'3800'95 ----- 3 5 8 8 " 8 5 ~ 3300.95 ~ 3065.45
•
Calculating from these weights how much of each of the other soaps would be required to replace 1000 pounds of tallow soap, the following quantities will be found : - 1151 lbs. o f olelc a c i d s o a p , 1087 " p a l m oil " 928 " c o c o a - n u t oil "
i.e., i.e., i.e.,
15.1 p e r c e n t . m o r e t h a n t a l [ o w s o a p . 8"7 " " 7.2 " less "
Differences like these must certainly be of importance in practice; and could, doubtless, be detected by direct experiment, if any one ~ould undertake a comparison of the various kinds of soap--a research which would not be easy, however.--Boettger's Polytechnisehes
2Yotizblatt. Artesian Well. The Cosmos announces the final success of the artesian well which has been sunk at Passy near Paris for the purpose of furnishing the water for the artificial rivulets of the Bois de Bologne. The bed of water was met at a depth of 577 metres (1893 feet) on Saturday at 4 o'clock, A. M., and on Sunday it had risen to from 6 to 9 feet below the surface. The slowness of its rise is caused by the tube being choked with sand, which, however, is supposed not to come from any caving in of the sides or bottom of the bore.
On Boilers and Boiler ]Plates. By Mr. RAMSELL. F r o m Newton's London Journal~ June, 1861.
The author remarked, primarily, that twenty years experience in the construction of steam boilers had given him some practical knowledge of his subject, and that, therefore, he had little diffidence in speaking uppn it. He had long ago become convinced of the necessity of adopting a different principle to that usually acted upon in the manufacture of boilers ; and a very important poifit was to do away with "stays," as used for strengthening them. More especially, he referred to marine boilers, and instanced, in the following order, three principal evils attending the employment of stays : 1st, the obstruction they offered to the effectually cleaning of the boilers; 2d, the increased amount of incrustation induced by them; and, 3d, the water and steam space they occupied. The fracture of the steel boilers of the John Penn, S. V., which came especially under his notice last year, prompted him to give more consideration to the subject. In those
110
thousand pounds of soap may be used in the course of a year, differences which cannot be deemed insignificant must exhibit themselves. :For example, the equivalent weights of several soaps (regarded as anhydrous), in common use, are as follows : - O l e i c a c i d ( r e d oil) s o a p , P a l m oil " Tallow " C o c o a - n u t oil "
~--.,'3800'95 ----- 3 5 8 8 " 8 5 ~ 3300.95 ~ 3065.45
•
Calculating from these weights how much of each of the other soaps would be required to replace 1000 pounds of tallow soap, the following quantities will be found : - 1151 lbs. o f olelc a c i d s o a p , 1087 " p a l m oil " 928 " c o c o a - n u t oil "
i.e., i.e., i.e.,
15.1 p e r c e n t . m o r e t h a n t a l [ o w s o a p . 8"7 " " 7.2 " less "
Differences like these must certainly be of importance in practice; and could, doubtless, be detected by direct experiment, if any one ~ould undertake a comparison of the various kinds of soap--a research which would not be easy, however.--Boettger's Polytechnisehes
2Yotizblatt. Artesian Well. The Cosmos announces the final success of the artesian well which has been sunk at Passy near Paris for the purpose of furnishing the water for the artificial rivulets of the Bois de Bologne. The bed of water was met at a depth of 577 metres (1893 feet) on Saturday at 4 o'clock, A. M., and on Sunday it had risen to from 6 to 9 feet below the surface. The slowness of its rise is caused by the tube being choked with sand, which, however, is supposed not to come from any caving in of the sides or bottom of the bore.
On Boilers and Boiler ]Plates. By Mr. RAMSELL. F r o m Newton's London Journal~ June, 1861.
The author remarked, primarily, that twenty years experience in the construction of steam boilers had given him some practical knowledge of his subject, and that, therefore, he had little diffidence in speaking uppn it. He had long ago become convinced of the necessity of adopting a different principle to that usually acted upon in the manufacture of boilers ; and a very important poifit was to do away with "stays," as used for strengthening them. More especially, he referred to marine boilers, and instanced, in the following order, three principal evils attending the employment of stays : 1st, the obstruction they offered to the effectually cleaning of the boilers; 2d, the increased amount of incrustation induced by them; and, 3d, the water and steam space they occupied. The fracture of the steel boilers of the John Penn, S. V., which came especially under his notice last year, prompted him to give more consideration to the subject. In those