To force garden rhubarb, sow the seed on a rich moist border in the beginning of April. Thin the young plants during the summer; in the end of October, carefully transplant them into forcing-pots, five or six in each pot. Place them in a northern aspect, to recover the effect of their removal from the seed-bed, and in a month they are fit for forcing.

American Canals.

The canals are the most striking internal improvements in the United States. The Great Erie canal is 360 miles in length, with an average breadth of 40 feet. It connects the great line of lakes with the ocean by the Hudson. Another to connect the Hudson with Lake Champlain is also complete. Above 2,000,000l. have been expended on them; and the annual returns from the tolls alone have already amounted to 120,000l. In the state of Ohio, another canal is in progress, almost equal in magnitude to the Erie canal. On the rivers which it connects with the lakes, there is a steam-boat navigation of 5,000 miles. In Pennsylvania, the Schuylkill navigation works comprise an extent of 108 miles, of which 62 are canal, and 46 the river made navigable. These works are complete. The Union canal, a line of 74 miles, to connect the Schuylkill with the Susqueannah, is in progress, and will be completed within the present year. These, however, are but a few of the gigantic strides which America is making in the march of nations.

Caledonian Canal.

Between August 1, 1826, and August 1, 1827, 212 vessels have passed through the Caledonian canal from sea to sea. 295 vessels have made partial passages through one end of the canal, to and from various ports; 74 boats, not above 15 tons burden each, have been employed in the carriage of articles to the fishery stations; and 91 steam-boats have passed through the canal, all within the period abovementioned.

Medicine.

A respectable contemporary journal gives the following calculations on the relative state of the medical profession in London and Paris. The French have long objected to the multitude of our professors, and the drugs they employ; and it would seem by this comparative statement that their objection is not ill-founded:—

In London there are 174 physicians, or 1 physician to 700 inhabitants; 1,000 surgeons, or 1 surgeon to 1,200 inhabitants; 2,000 apothecaries, or 1 apothecary to 600 inhabitants.

In Paris there is 1 physician to 1,300 inhabitants; 1 surgeon to 6,000 inhabitants; 1 apothecary to 4,450 inhabitants.

Being in the proportion of 1 physician in Paris to 5 in London; 5 surgeons in London to 1 in Paris; 7 apothecaries in London to 1 in Paris.