I. Jaros

“ My Dear Sir:—The object of clothing is to preserve the proper heat of the body, by protecting it both from cold and heat, and thus to prevent the injurious actions of sudden changes of temperature upon the skin. ”

“ Sir:—Having become interested in the results from wearing your underwear by myself and my men, I am pleased to state their own experience, which is satisfactory in every particular, as to protection against the cold and changeable temperature; raising the general condition of the body, and maintaining an even temperature under all the trying conditions; does raise their efficiency. ”

“ It is quite a good absorbent of moisture, ranking next to wool. At ordinary temperature it always contains between 9 and 12 per centum of moisture. In its sale or purchase, account is taken of the amount of moisture in order to protect the purchaser from paying silk prices for water.
Wool, the fleece of sheep, an animal fibre, whose function in nature has been two-fold, the protection from cold, and an aid to evaporation of cutaneous moisture, is admirably fitted as a material for clothing. It permits but slow radiation of heat, and absorbs moisture better than any other clothing material. ”

“ The Jaros Hygienic Underwear material, a new fabric, seems beautifully adapted to this end. A layer of woolen fibres, soft and fleecy, is firmly held on one side of and in the meshes of an exceeding porous cotton fabric, so that while one extremity of a fibre lies against the skin, the other is in contact with the cotton; thus admitting of the rapid transference of all dampness of perspiration to the cotton where it is retained, and consequently leaving no moisture next to the skin to absorb and diminish the heat of the body. ”

“ The patients to whom I have recommended it are of delicate health, very susceptible to cold. They uniformly expressed themselves as pleased with the garments made for them by you, and as having suffered far less from the cold this winter than usual: a result which they attribute directly to the power of the underclothing to prevent sudden chilling of the body upon transition from a high to a low temperature. Personally, I have worn the underclothing all winter, and believe my unwonted freedom from attacks of bronchitis due to the efficient protection afforded by the underwear. ”

“ Gentlemen:—The "Jaros Hygienic Underwear" furnished by your firm to a large number of the members of the New Haven Fire Department for winter wear has given very general satisfaction. Many of the men who have practically tried them, express themselves highly pleased and state that they would not wear anything else as a substitute if the cost was much higher than what they paid for them.
They are no doubt of great value as a protection against the sudden changes in our climate and proof against taking cold. ”

“ The dress of the consumptive patient should be adapted to equalize the temperature of the body, so loose that it interferes in no way with the natural functions. The underclothing should be woolen, either lamb's wool or flannel. After an extended observation of the benefits derived from wearing the "Jaros Hygienic Underclothing,"—a wool fleece knit material of graded weights, adapted to the season, I believe to be the best protective devices yet known for these patients. ”

“ Jaros Hygienic Underwear Co., Chicago, Ill.
Gentlemen:—I take pleasure in recommending the Hygienic Underwear. I have been wearing it constantly for the past two winters and I find it not only conducive to comfort but to good health, and I recommend it heartily to any one who desires to be free from chills and rheumatism and to those who are exposed to sudden changes of climate. Railroad men will not only find that the Jaros Underwear gives them comfort but also good health. ”

“ My Dear Sir:—I have critically examined and practically tested the "Jaros Hygienic Wear," and consider it the best fabric with which I am acquainted, for retaining the animal heat, and preventing chilling of the [Pg 73] body by sudden changes of temperature. I consider the heavy wear especially valuable for car drivers, firemen, policemen, or those whose occupation expose them constantly to the inclemency of the weather. ”

“ The wool unspun, worn next the body, acts as a cutaneous stimulant (guarding against irritation so often apparent with spun fiber) , the body temperature being stored between the individual fibers, prevents the cold from directly striking the body from without (acting like double casement windows in a house) , and, therefore so valuable when men are forced to sudden changes from in-doors to the cold of out-doors. ”

“ In addition to its well-known filtering capacity, it has a greater stimulating action upon the skin than any other. On the other hand, cotton fibre, on account of its great capillary attraction, rapidly absorbs and retains moisture. A fabric, therefore, so constructed as to allow a layer of woolen fibre to lie between the skin and a layer of cotton fibre, and sufficiently open and loose as to contain the largest possible amount of air is the ideal. The Jaros Hygienic Underwear material, a new fabric, seems beautifully adapted to this end. ”

“ I have bought the best woolen and heaviest silk underwear in prominent cities where I have travelled, abroad as well as in this country, with the special view of getting something that would protect me while in my rubber dress, on the long, cold and damp voyages I make. ”

“ At the expiration of five hours the temperature of the rabbit was found to be 76 degrees. The capacity of water to absorb heat is known to be greater than any other substance. Now, when our clothing is damp from perspiration or from any other cause, our bodies lose just as much heat as the moisture in our clothing is capable of absorbing. The importance of always having dry material next to the [Pg 35] skin is evident, and that material which will retain the least moisture is the best. ”

“ The question to be determined was, whether the protecting power of the substances used in the previous experiments was due to the non-conduction of the material of those substances themselves, or whether the air imprisoned between their fibres was an important factor. If the silk, wool and cotton did all the obstructive work independently of the air, then the amount of obstruction should vary with the quantity of fibre. ”

“ The importance of this subject, and the possibilities of this new fabric for the prevention of colds, and their resultant diseases, can only be appreciated when we remember the simple fact that it is impossible to take a cold so long as a healthy condition of the skin, and an even temperature of the surface of the body, are maintained. ”

“ The cotton framework without, makes the material two-fold in its action; for while the wool has a power of absorption of moisture, the cotton has that of attraction and retention, so that any perspiration exuded from the body is taken up by the cotton from the wool and retained, while any water from without striking the cotton surface is attracted and retained, and prevented from penetrating through to the body. ”

“ The wool, again, absorbs moisture from the body, and transports it readily to the outer framework of cotton, thereby protecting against the possibility of wet clothing next the skin to chill the surface at every change in temperature. ”

“ My Dear Sir:—In reply to your inquiry relative to the benefits derived by our men from the use of your Wear, I beg to state that I have yet to learn of a single case of illness due to exposure of any man who has worn these garments. They were introduced into this Department about three years ago, and quite generally adopted by our men. As I have said, our records do not show that a man was obliged to go off duty during any cold months of the year on account of sickness. ”

“ Have not had a cold during the time, nor a sense of chilliness even during the coldest weather. My Catarrh has scarcely troubled me at all during the winter, and I would not be without these suits were the cost ten times what it is. You are at liberty to say to railroad men, and others exposed in extreme changes of climate, that they cannot afford to be without the "Jaros Hygienic Underwear." ”

“ The excellent protection under every change of temperature during the winter months, guards against attacks so frequent with men exposed, of rheumatism, kidney disease, and pulmonary troubles, and all character of ailments resulting from colds. This is too often cause for irregularities with men, which is a loss to them and often an inconvenience to the Company.
We believe the underwear good, and just the thing for the purposes it is advocated. ”

“ Linen conducts heat better than cotton, silk or wool. It absorbs moisture and does not shrink. Cotton, also a vegetable fibre, which is hard, durable and does not shrink, has serious objections, in that it is very non-absorbent of moisture. It does not conduct heat as well as linen, but more rapidly than silk or wool. ”

“ The exercise and heavy rubber suit which I wear often cause active perspiration, and my observation has been that from one to one and a half pounds of moisture is thrown off during an exhibition lasting from one and a half to two hours. With all other kind of underwear, this moisture was taken up only partially, the garments becoming thoroughly wet, and causing a chilling which was always hard for me to overcome ”

“ As absorbers of moisture, rank, respectively: wool, silk, linen and cotton.
The advantages of cotton over wool lie in its cheapness and non-shrinking qualities. If properly constructed, however, the advantageous properties of wool can be utilized without the shrinking by using a cotton framework, into the meshes of which the loose, raw fleece is worked.
That fabric will be best adapted for health, which combined with greatest porosity, possesses the least (a) conductivity, (b) greatest hydroscopic power, and (c) best shape. ”

“ This occurring in the case of perspiration in the cloth interstices increases by just so much their warmth, in other words lessens the demand for heat production.
Before leaving the subject of texture, note should be made of the importance of its being of a loose nature. However great the hydroscopic power of a material in the raw state, if it be tightly woven that power is greatly diminished, or even quite destroyed. Hence the advantage of loosely knitted over tightly woven goods.
Important indeed is the proper fitting of clothing. ”

“ A material of loose texture confining much air in its interstices is warmer than same amount of clothing material closely woven. Wool or cotton carded and spread out in the shape of a wadding and held, will make a warmer garment than the same quantity spun and woven, and similarly covered. ”

“ His experiments led him to believe its hydroscopic powers double in proportion to its weight and quadruple for surface, as compared with cotton or linen. Perfectly dried wool has the power of absorbing 50 per centum, by weight, of water. Under ordinary conditions it contains 12 to 18 per centum.
Other things being equal, then woolen fabrics will best prevent too rapid radiation of heat; silk next, cotton third, linen fourth.
Wash-leather, buckskin and chamois-skin need not be considered, for one or all of the following reasons: Expense, poor provision for evaporation, poor washing qualities. ”

“ They have proven more efficient than any other wear in the actions for which truly hygienic wear is sought, and therefore I cheerfully recommend it to my patients. It laundries beautifully without shrinking. ”

“ The first use of clothing being to keep the wearer warm, Rumford's first inquiry was directed to find the best material for this purpose. He saw at once that clothing did this by resisting the passage outwards of the animal heat.
He accordingly constructed a model wearer, as described in the following experiments: A mercurial thermometer, whose bulb was 55/100th of an inch in diameter, and its tube about ten inches long. ”

“ With conductors, whose occupation necessarily prevents the wearing of a very heavy overcoat, it is of great advantage, and gripmen and drivers are enabled to thoroughly protect themselves in their exposed positions without an overplus of clothing, otherwise necessary. ”

“ Hygienic Underwear
Testimonials
Introduction.
Professors Von Pettenkofer, Parkes, and Buck, pronounced Hygienists, have contributed largely to establishing theories regarding clothing materials and their relations to health. These conclusions have led to a more general consideration thereof, in the therapeutics, as well as prophylaxis in medical practice.
Wool is regarded as deserving first consideration.
MAGNIFIED—WOOL FIBRE.
The fibres are cylindrical collections of numerous cells, and present each the appearance of a tube covered with epidermic scales which overlap each other. ”

“ Chicago, Dec. 10, 1885.
Mr. J. Jaros, City.
I have examined specimens of your "Jaros Hygienic Wear" with much interest. In material and construction these garments fulfill completely the requirements of the scientific essentials in underwear, insuring to the highest degree both the comfort and the health of the wearer, and as such I recommend them.
De Laskie Miller, Ph. D., M. D.
I concur in the above. ”

“ I would especially recommend for these patients the "Jaros Hygienic Underwear." These garments are light, warm, and delightfully soft. They afford full protection to the body against sudden chilling." ”

“ The Skin.—* * * The most thorough protection to the skin is secured by the use of the Jaros Hygienic Wear, especially during the cold and damp season. * * * It will be seen that the cotton fabric secures a comparatively static condition of air next the skin, while the fleece wool combines the minimum radiation of heat from the body with the greatest attainable hydroscopic power, thus securing uniform dryness and warmth of the skin under various conditions of atmosphere. ”