Journal 



OF THE 



NEW-YORK MICROSCOPICAL SOCIETY. 



Vol. V. APRIL, 1889. No. 2. 



THE COMPARATIVE HYGIENE OF THE ATMOS- 

 PHERE IN RELATION TO HAY-FEVER. 



BY SAMUEL LOCKWOOD, PH. D. 



{Read January i8f/i, 1889.) 

 [Copyrighted.] 



In the middle of August, 1888, in pursuance of a promise to 

 the United States Hay-Fever Association, I began some work in 

 an effort to determine the relative character of the air in rela- 

 tion to Hay-Fever. My post of observation was Maplewood, N. 

 H., about a mile and a half from Bethlehem, the noted resort for 



Kxplanatioii of Plate IG. 



1, Fungus-spore, with tip of pedicel attaclied. 8, A group of smooth pollens, with 

 protuberances. 3, A fungus-spore. 4, Five figures of spinous pollens. 5, A 

 group of twelve pollens of Ragweed. 6, Two of the frequent mineral particles. 

 7, Five epithelial plant-scales. 8, Tlu-ee of the same. 9, Ovoid fungu.s-.spore. 

 10, Fungus-spore, with thick walls. 11, Four plant-scales, and two mineral 

 flakes with acute angles. 1^, Vegetable fragment. 13, and perhaps 14, Minute 

 spores. This impalpable dust, probably the spores of some "'smut" or "bunt," 

 was often shown on the slides in groups containing many individuals. 1 5, A group 

 of pedicelled fungus-.spores. (All the heavily shaded figures, not numbered, are 

 fungus-spores of tliis character.) 16, Three fungus-liodies. 17, A mineral tlake. 

 18, Six vegetable exuvias. H), Tluee mineral Hakes. 30, Vegetable exuvia'. 

 21. Three pollen gi-ains. 33, 23, 34, 35, Epitheloid scale exuvia- of i)lants. 26, 

 37, Three mineral Hakes. 38, Sometliiug vegetable. 39, 30, Pollen-grains, same 

 as F'ig. 4. 31, Twelve vegetable and mineral scales. (This is from one of the 

 mountain slides, and is typical of the mountain-catch.) 32, A mineral Hake. 

 33, A pair of pollen-grains, identical with pair at the lower right hand side of Fig. 

 2. 34, 35, Seven, and three pollen-grains like Fig. -..'1. 36, 37, 38, Fungus-spores. 

 (37, A side view. 38, An end view.) 39, 40, Fungus-spores. (Probably same as 

 Fig. 9.) 41, Fimgus-spore with thick wall, and teat-like terminus. 43, Two 

 fungus-spores with walls like Fig. 10. 43, Veget^ible fragment, with fine perfoni- 

 tions, frequently occurring. 44, This and the four forms in 45 show the crystal, 

 like angles of the objects, which are here called epitheloid vegetable-scales. 46, 

 A pair of teleutospores, that iscompleted spores, of a Phrafimidinm, or chambered 

 spore, such as occui-s in the "brand "or "rust" that attacks the Rose. 47, A 

 byssus, or vegetable-hair. 

 Note. —These figures are of course elective, the object being to give the most inter- 

 esting forms. They are taken from only seven slides out of nearly one hundred. 

 Where gi-oups are drawn the objects are in relative position, as they lay on the slide.*. 

 Group 5 shows twelve pollen-grains in position, and this is taken from a slide contain- 

 ing nearly three hundred pollen grains, besides innumerable other objects both vege- 

 table and mineral. To exhaust the diversity of forms would need another plate; for 

 not only are many forms of vegetable hairs, and other exuviip of structure oniittefk 

 but also some insect-scales, etc. For this beautiful plate I am indebted to the facile 

 pencil of my friend. Dr. A. C. Stokes, the accomplished infusorist. 



