CALENDAR FOR THE YEAR 1871. 607 



APRIL 2 8. FOURTEENTH WEEK. 



Mean temperature at Greenwich, 43. i, being 2. i below the average : highest in 

 shade, 56' '.7 ; lowest in shade, 29. i. My Garden : highest in shade, 58 ; lowest in 

 shade, 25. Black bulb : highest in sunshine, I33.5 ; lowest on grass, 19. Weather, 

 dry and cold. Rainfall at my garden, 0.03 inch ; at Greenwich, o.oi inch. 



A severe frost occurred on the night of Thursday, April 7, and Friday, April 8. 

 Many fronds of ferns were frozen : those of lady-ferns were completely destroyed ; and 

 those of the royal fern were cut down. Many of the ostrich fern (Struthiopteris] were 

 killed, as well as many of the Cystopteris montana and the bracken. Asparagus shoots 

 fit for the first cutting were frosted. Cherry blossoms were frozen, and the little 

 apricots in the orchard-house were killed. All the alpine plants in flower were injured: 

 especially, the Epimediums, which were fine on Thursday, were killed by Saturday. 

 Whole sheets of flower of the beautiful Oxalis acetosella were frosted, and the plants of 

 Myosotis dissitiflora much damaged. 

 FLOWERS : Glass. Grapes in Poor Man's house. Rhynchospermum jasminioides. 



Male blossoms of melons. 



Out of doors. Epimedium grandiflorum. E. rubrum. 

 FRUIT : Out of doors. Apples : Old Nonpareil ; Boston Russet ; Sturmer Pippin ; 



Wellington. 



VEGETALS : Glass. French beans. Mushrooms. Mustard and cress. Cucumbers. 

 Out of doors. Jerusalem artichokes. Sea-kale. Brussels sprouts. Kale. Carrots. 



Parsnips. Beet. Onions. Leeks. Rhubarb. Radishes. Watercress. 

 GARDEN OPERATIONS. Seeds sown: Peas : Champion of England, in succession. 



Lettuces planted. 

 NATURAL HISTORY. Trout ova in the breeding-boxes hatched April 5. A wild grey 



goose visited the lake. House-martins noticed. 



APRIL 9 15. FIFTEENTH WEEK. 



Mean temperature at Greenwich, 48. 3, being 3.2 above the average : highest in 

 shade, 66. 5 ; lowest in shade, 30. My Garden, highest in shade, 68 ; lowest in 

 shade, 26. Black bulb : highest in sunshine, I36.5 ; lowest on grass, 20. Weather, 

 on the 1 5th half a gale. Rainfall at my garden, 0.26 inch ; at Greenwich, 0.36 inch. 



The effects of the frosts of the preceding week were now apparent, and three- 

 quarters of the crop of gooseberries were found to have been frozen. The expanded 

 flowers of the fruit-trees were frozen, but those still in bud were not injured. Young 

 seedling plants of the cabbage tribe were killed. The flower buds of the laburnum 

 were much damaged. 

 FLOWERS : Glass. Chlorodendron Thomsoni. C. Balfouri. C. splendens. Passiflora 



floribunda. Combretum purpureum. 

 Out of doors. Apples : Siberian Crab ; Irish Peach ; Nonsuch. Cherries, Plums, 



and Pears in full blossom. Anemone Pulsatilla. A. hortensis. Alyssum saxatile. 



Aubrietia purpurea. A. Campbelli. Ranunculus* amplexicaulis. Saxifraga. 



Gentiana acaulis. Cuckoo-flower. Ground ivy. 



FRUIT. Apples : Golden Drop ; Sturmer Pippin ; Winter Pearmain ; Boston Russet ; 



Old Nonpareil. 



