383 SCIENTIFIC NEWS. 



of phosphoric matches, which require a mixture of thisf 

 substance. 

 Improvement A musician of Arallon, in France, professes to have 

 wmdinsuu- discovered a method of givini? to all kinds of wind instru- 

 ments, ments made of wood that improved tone, which they gene- . 

 rally acquire only after having been used f )r a considerable 

 time, and which is afterward liable to be impaired. It im- 

 parts to a new instrument all the perfection of one that has 

 been ten years in use, and renders it permanent. 



Soles of shoes A Frenchman, who professes to make screws superior in 



fastened by ,. , ^ ^r^ , , 



screws. quality to the best of English manufacture, recommends 



them strongly for fastening the soles of boots and shoes. 



He says they occasion a saving of three fourths, from the 



great durability of the shoes thus made ; and that they do 



not make a noise like nails, as their heads imbed themselves 



in the leather. 



Treatise of ma- A Complete course of pure Mathematics, for the use of 



tiemaucs. ^^^ pupils of the Normal and Polytechnic Schools, has been 

 published at Paris, by Professor L. B. Fraucoeur, in two 

 volumes. Its method is much commended. 



Meteorological Professor Vassalli Eandi commenced, in 1809, a meteoro- 

 logical Journal, under the title of Annals of the Observa- 

 tory of the Academy of Turin, with statistical notes rela- 

 tive to Agriculture and Physic. It appears to embrace much 

 information from its plan, which is as follows : I. The days 

 of the month, the moon's age, daily declination, phases, 

 apogee, and perigee ; height of the barometer, and of two 



: thermometers, one facing the south, the other the north, at 



sun-rise, noon, and sun-set. 2. Observations on the ane- 

 moscope, anemometer, hygrometer, hydrometer, and atmi- 

 dometer, at the same hours. 3. State of the atmosphere at 

 the same periods. 4. Summary of the meteorological ob- 

 servations for each month, with the extraordinary pheno- 

 mena, if any occur. 5. Comparison of these observations 

 ■with meteorological sayings, both general and relating to 

 the state of the moon. 6. Natural epochs, namely, the 

 appearance of birds of passage and insects, and rural obser- 

 vations relative to the operations of agriculture, the flower- 

 ing of plants, the harvesting of different crops, thedevasta* 



tious of insects, and the congress and births of domestii; 



animklSj^ 



