BOTANICAL GAZETTE. 200 



286 " in all respects the leaf was natural as to the position of its 

 parts, t 

 Experiment No. XL— A drop of reagent acetic acid (HC2 H3 

 0.2-sp. gr. 1.04) was placed upon a leaf at 3:45 p. m., June 17, '79. 



15 min. the solution had assumed thecolor of the leaf; 4 or 5 submar- 



ginal tentacles were inflected. 



25 " many of the third row of tentacles had inflected so as to touch 

 the drop of acid. 



45 " all of the submarginal tentacles were inflected more or less; 

 the spot where the acid was placed was somewhat depressed, 

 the acid itself had disappeared. 



75 " nearly all the submarginal and many of the marginal tenta- 

 cles had inflected and touched the spot where the acid had 

 been placed. 



16 hrs. the whole leaf somewhat withered, the tentacles except the 



marginal still inflected as in the last note ; leaf yellow. 

 25 '* the marginal tentacles had all reflexed assuming the nor- 

 mal position; leaf apparently dead. 

 146 " the whole leaf was withered and dead.* 



Mary land Flinji;i. 1. — In the vicinity of Baltimore, Maryland, 

 the months of June and July. 1880, were comparatively poor in fleshy 

 fungi The very mild winter and early sprmg seemed to give promise 

 that the coming season would yield an abundant harvest ; but in the 

 early summer several heavy rain storms either destroyed the mycelium 

 or interfered with its development. The mycelium of a fungus is ex- 

 ceedingly delicate and plants are often exterminated from its having 

 in some way been mughly dealt with. A m derate amount of atmos 

 pheric heat and moisture is all that is necessary to produce an abundant 

 crop' of fungi, an excessive amount • f either will cause an almost entire 

 failure. That they often fail us in the requirement of heat is proved 

 by some coming in very cold weather. The largest and most perfect 

 specimens of Coprinus. comafus, Fr , that I ever saw came as late as 

 December. As a further instance of their Arctic taste, showing the 

 severity of the weather, a bucket of water that stood beside them was 

 coated over with ice. They grew in a flower garden among the per- 

 ishing and withered phienogamous plants which with the exception of 

 a few very hardy ones had ceased to bloom. 



In the early part of June, Phallus Dainonum, Rumph., appeared 

 about twenty yards from the spot where I found it in June 1878, but 

 it was dwarfed in size. In the January number of the Gazette, 1880, 

 I published a description of this plant under the name FJiallus diipli- 

 catus, Bosc. The deep reticulated veil deceived me. After the publi- 

 cation of my article a very kind friend informed me of my mistake. 

 Phallus impudicus. L. , came a few days later, large and perfect. These 

 plants are very imposing in appearance and generally select open 



+Thc secretion did not iippear on tlie tentacles until :3-t hrs. after tlui last ol)servation. 



*The peculiar fact {•onnccted witli this cxiieriuient is that while tlic submarginal 

 and disk tentacles seemed to inflect and then l)eci)nie paralyzed and inc.apatile of reflex 

 aeiion, those of the marginal row not only in(lecte<i but afterwards rcllexed. Tlie acid was 

 rather too strong for a lavoialilt! observation of its true action upon the leaf. 



