1847.] Publications. 337 



spiratory oxygen, and consequently breathe by absorbing oxygen 

 Irotn the atmosphere. This mode of respiration is closely allied 

 to that of insects which breathe by tracheae, and even the orifices 

 of these organs resemble each other in shape, being, in both in- 

 stances, an elongated ellipse. 



CRIMSON CLOVER. 



The following notice of the Trijblium incarnatmn, is taken 

 from the Code of Agriculture, and as this grass is getting into 

 favor, it will not be unacceptable to see it so highly spoken of 

 abroad; "It is a subject of astonishment that this valuable plant, 

 {Trifolium incarnatmn,) should not have been long ago introduced 

 into this country, and cultivated on an extensive scale. If sown 

 in autumn, after a crop of potatoes or other roots, it produces next 

 spring a crop fit to be cut for soiling cattle, eight days earlier 

 than lucerne, and a fortnight before red clover. Care, however, 

 must be taken to have good seed, and not to sow it too deep. It 

 produces two excellent crops in one year, the first of which should 

 be cut as soon as it comes into flower, and the second will pro- 

 duce a considerable quantity of seed. From its early growth in 

 spring, when other articles for feeding stock with advantage are 

 so difficult to be obtained, it is likely to become a valuable acqui- 

 sition to British husbandry." If the clover — the seed of which 

 is, we believe, to be had in considerable quantity of the seed mer- 

 chants in this country — be sown in spring, it is considered that it 

 W'ill produce a full crop in Scotland in the months of July or 

 August, and must be of no great value to those on whose lands 

 the common red clover does not succeed, or where the crop may 

 have partially failed. It is proper to remark that this is an annual 

 plant, and therefore should only be employed in partial husbandry. 

 — Baltimore Farmer. 



NEW PUBLICATIONS. 



A Practical Treatise on the Diseases of Children: By D. 

 Francis Condie, m. d.. Secretary of the College of Physicians, 

 etc. Second edition: revised and augmented. Philadelphia: 

 Lee & Blanchard. 1847; pp. 657. 



It is pleasant to witness the progress of medicine, and to see a 

 real advance of this branch of knowledge to that state when the 

 mind will be more directed to the prevention, than the cure of 

 disease. In infancy, there can be no doubt that diseases may, in 

 nine cases out of ten, be prevented; and it seems that the pro- 



