We copy this letter entire, hoping by so doing to bring this subject to the attention of those whose opinion and judgment are of greater worth than our own. There are many conflicting opinions concerning the effect which plants and vines, growing in the house, and filling it by day and by night with their delightful atmosphere, have upon the health of their worshipers. If the wise and scientific among our readers will give this matter attentive and sober thought, we hope to find in the multitude of counselors the wisdom which is so much needed. It is not very many years since physicians lifted up their voices against this pleasant adornment of our homes, by which some portion of the joyous summer may be wrested from the grasp of the frost king, and which enables us while indoors, to forget that fingers and toes are in danger the moment we venture outside of the carefully tended parlor garden. But our physicians change their opinions like other mortals, and at the present time some affirm that plants and vines in the house, or even in the sleeping-apartments, are health-giving. They tell us that the carbonic gas which is being constantly set free from our lungs, and which is detrimental, is at once absorbed by our flowers, while these at the same time give to us, in exchange, the oxygen which, in its proper place and quantity, is so necessary to health and life. Other physicians assume that a growing plant is not noxious or in any way detrimental, but that as soon as it begins to blossom it should be at once removed from a bedchamber, and if allowed to remain in the house at all, should be placed, while in bloom, as far as possible from the family apartments. Again, it is stated--and all these conflicting opinions, we are told, come to us from the “best and most reliable authority”--that no plant, in flower or not, is at all injurious in any part of the house, so long as the perfume from the blossom is not powerful and not at all offensive. “Who shall decide when doctors disagree?” It seems to us very important that our learned, scientific men--those who make the effects of the various gases on life and health a careful study--should give this question a thorough investigation, and when, after mature research, they arrive, as they suppose, at a proper conclusion, should publish their opinion in simple terms, such as all can comprehend. We should rejoice if the conclusion of the whole matter might be such that all could lean upon it with no fear of its proving by and by a broken reed; but it is difficult to keep pace with changes in the results of scientific investigations.