J. W. Bailey on Diatomacee. 349 
July Ist, Currants ripe; 5th, Raspberries ripe; 10th, Wheat 
harvest commences; 22nd, Gooseberries ripe; 25th, Dahlias and 
Gladiolus in flower; 27th, Harvest apple ripe; 25th and 27th, 
the hottest days of the year, the thermometer on each of these 
days averaging 82°; at 3 o’clock p.m., the thermometer stood at 
92°, 
August 5th, Blackberries ripe; 7th, Tiger flower in blossom ; 
10th, Pine apple melons ripe; 15th, Watermelons ripe; 19th, 
Garland Syringa—Philadelphus grandiflorus, in flower the sec- 
ond time; 25th, Snow-ball—Virburnum opulus, in flower the 
- second time, Green gage ripe. 
Sept. 2nd, Wild Plums ripe; Sth, Corn ripe and fit for harvest- 
ing; 20th, Isabella Grape ripe; 28th, Frost for the first time, 
Virburnum opulus in flower through this month. 
Oct. 7th, Dahlias and Tomatoes injured by the frost for the . 
first time. Virburnum opulus in bloom up to this date.” 
Nov. 16th, First snow ; 22nd, Ranunculus fascicularis in blos- 
som the second time and continued in bloom through this month, 
-. Dec. 13th, The thermometer at sunrise stood —4°, the only time’ 
during the month that it was below zero. 
Art. XX XIX.— Miscellancous Notices ; by J. W. Baitey. 
1. On the real nature of the so-called “ orifices” in Diatoma- 
ceous shells.—It is well known to naturalists that several of the 
most distinguished writers on the Diatomaceee have asserted the 
existence of “apertures,” “ orifices” or “ mouths” in the ventral 
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my opinion may be obtained. I now offer proof of another kind 
which removes all doubt, and shows that these markings are 
heither apertures nor depressions, but are in reality the thickest 
parts of the shell. If the shells are placed in dilute hydrofluoric 
2 
i a if any exist, should become enlarged. Now the very parts whieh. , 
_ © % See this Journal, vol. xlii, p, 97, American Bacillaria, part 2. 
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